10 Best Inverter Battery In India 2021

A solar inverter, backup inverter, trouble, UPS, charger with charger, inverter with pure sine, car inverter… Entangled? Which inverter do you need? The information below will help you understand the question of choosing the “right” inverter!

Before you look at where to buy a new inverter battery by going to a price comparison site, there are three more things you need to consider: the voltage expressed in Volt, the intensity expressed in Ah, and the power expressed in Watt. Be aware that an inverter battery worthy of the name must have a minimum voltage of 12V, a minimum intensity of 7Ah to last well over time. You will easily get its power by making the product of intensity and tension, but generally, the power of 85W is already very appreciable.


What is an Inverter?

The inverter is a transformer that converts constant electric current (average 12 B) from batteries into variable batteries, alters voltage depending on the situation. If the electricity is supplied, as usual, it starts to charge the batteries (ACB). If the voltage drops or shuts down, the power of the home network goes to the AKB, turning their constant voltage 12 B into a variable – 220B/50 Hz.

For the inverter to work normally, the best materials and details are needed. It depends on how well the inverter is installed and how long other components, especially the AKB, will work. The quality of the inverter determines the duration of the AKB – enough for 2 years or as much as 12 years.

You can achieve a better service with various components, such as wind turbines or solar panels.


10 Best Inverter Battery in India For Home use 2021

No one is immune to power outages, and when you are working on a desktop computer and having an inverter whose battery is starting to let go, it is miserable. This mini-guide will teach you just how to choose the best inverter batteries for 2021.

Luminous RC 25000 200AH Tubular

Luminous RC 25000 200AH Tubular

Nothing is as annoying as a power outage in full activity. The inverter is a great help to not lose the data, for the stability of the tools, and to save electricity. The battery of an inverter is changed after a certain period of use.

This APC battery is one of the best spare models for the inverter on the market. It has been on sale since 2006 and is designed as an anti-dropper.

Measuring 9.9 x 7.4 x 11.2 cm, weighing 2.20 kg, the battery is made of lead-acid. Its type of battery case is internal, and its type of power supply is AC. It is compatible with the APC Back-UPS ES 500, BF500, and APC Cyberport 500.

Its operating temperature ranges from 0 to 40 degrees Celsius, while it takes between -15 and 45 degrees Celsius for storage. As for its humidity, it is 0 to -95% for operation or storage.

Produced by SCHNEIDER ELECTRIC, the battery has a one-year warranty with service and maintenance. It is equipped with the required adapters and cables, an installation guide, and a recycling guide.


Easy to install: It’s effortless to assemble. Also, being a spare battery, no connection, application, or other complication is required for its installation.

Tested and certified: SCHNEIDER ELECTRIC has made sure its products are reliable. The battery has been approved as compatible with UPS hardware and must have at least 3 years of durability.

Recyclable: Environmental protection is taken into account; the battery can be recycled very well. The recycling guide, available from the moment of acquisition, sets out clear instructions on reusing the battery after a replacement.


The counters

Inadequate warranty: One year’s warranty is not satisfactory, some products start to have defects in 18 months, and nothing can be done about it. Also, this kind of material is not really exchangeable in case of dissatisfaction.

Recycling is not assured: A prepaid port with a partner is required to ensure that the entire crew is reusable. Otherwise, it can only be arranged in the meantime.


Exide 150 AH New Insta Brite

Exide 150 AH New Insta Brite

It is not for nothing that it is said that the HQ BAT-LEAD-12 battery is the best battery for the inverter. Indeed, it is a battery compatible with most inverters in addition to being of good quality.

In addition to having standard dimensions, this battery also has good specificities, namely: a capacity of 7.2 Ah and a voltage of 12V. The installation of the inverter will be easy, as it is a standard inverter battery.

Also, as it is a dead battery, you can count on its efficiency and performance. However, the only downside that current users note is that the battery does not come with a level indicator, but this is only a simple detail about its capabilities.

Note that you can allow yourself to connect your center unit, screen, and printer to the inverter with this inverter battery.

In the event of a problem, the manufacturer guarantees this inverter battery for 2 years. However, this battery has a lifespan of between 3 and 10 years, depending on the use of the inverter in which you intend to install it. In short, this inverter battery is made for people who don’t like to complicate their lives and who appreciate quality products at the best price.

After several years of service, your inverter’s battery has finally given up. To continue to protect your electronic and electrical devices, you would like to know which inverter battery to choose? Consider this HQ BAT-LEAD-12; it could be of great help to you.


Compatibility: It will be of great use due to its versatility. Indeed, it can be installed in an inverter and emergency power supplies, alarm systems, models, etc.

Effective: This lead battery has a voltage of 12 volts and has a capacity of 7200 mAh. It will therefore be ideal for use with an inverter. You’ll be relieved knowing that your devices will be perfectly protected again.

2-year warranty: This argument can only be a hit with customers. This will ensure that the product meets your expectations.


Crosses: According to some consumers, they would be a little different from your inverter’s original batteries. However, the connection can still be made, but slight changes are sometimes necessary in some cases.


LUMINOUS RC 18000 150 AH Tall Tubular

LUMINOUS RC 18000 150 AH Tall Tubular

Are you looking for the best battery for a cheap inverter? Don’t worry; you may find your happiness by opting for the Wentronic 48322 inverter battery. Indeed, you will be entitled to a battery of lead inverter and quite waterproof of appreciable efficiency, according to those who have already chosen it.

Also, this battery can be adapted to other devices, even if it was made for inverters. In terms of capabilities, you will choose a battery of 12000 mAh capacity and 6V voltage by opting for this battery. However, given its low voltage, if you place it in an inverter, you can hope to use a central unit and a computer screen without any problems. In terms of autonomy, let’s say it is correct and satisfactory.

Depending on the manufacturer, this battery has a lifespan of between 3 and 5 years. You can always expect a correct battery life from it, knowing that the battery life will depend largely on the use of the device in which you place it. Anyway, you will make a good deal for its price by opting for this battery; simply check that it is compatible with the inverter you intend to equip with.

When asked the best inverter battery brand on the market, it is not uncommon to come across customers who answer “Wentronic.” The firm produces quality products with an excellent ability to handle the load. The Wentronic 48322 is the perfect example.



Excellent battery life: This battery is essential for your inverter. It can hold the load for a long time and provide sufficient power.

Affordable price: It is ranked among the cheapest inverter batteries on the market, yet its quality and performance are not left behind.



Small confusion: Some customers were surprised to receive an Ultra Range battery rather than Ultracell. However, the performance should be the same.


Okaya 5024TT 150 AH Tall Tubular

Okaya 5024TT 150 AH Tall Tubular

What is the best inverter battery in the walk? You’re right to ask yourself this question because buying an inverter battery is really important, and if you make the wrong choice, your inverter will disappoint you. Thus, the Ultracell 12V 7Ah inverter battery is a good answer to this question.

Of course, it’s a dead battery, and therefore, you can hope, by opting for it, that it has good battery life. Besides, these technical characteristics can confirm that it enjoys good autonomy. Indeed, it works under a voltage of 12V, and it has a capacity of 7Ah. Indeed, it’s not the most impressive of abilities, but keep in mind that it’s a battery for inverters.

Besides, you can easily install it on an inverter as it is a standard battery. Also, it’s a battery that you can use for other devices, and as it’s completely waterproof, you won’t have any leak problems.

In short, if you use this battery for an inverter, you can plug in a central unit and a screen, but you can also use it on a quad bike, a small motorcycle, an electric scooter, and alarms.

If you’re going to change your inverter’s battery, and you want to choose the perfect model based on the ranking of the best inverter batteries on the market, then you won’t be able to miss out on the Ultracell 12V 7Ah.



Satisfactory performance: It may not be the most powerful battery on the market, but its performance is sufficient to be used with an inverter.

Ecological: Lead batteries are more environmentally friendly: they are 90% recyclable,



Lifespan: Some customer reviews cast doubt on the battery life.


Exide Technologies Inva Master Tall IMTT1500 150Ah


If you’re interviewing a serious and reliable comparative inverter battery, it will tell you that the Eaton 68771 inverter battery is among the best on the market. Indeed, it is an inverter battery with a 2-year warranty and has a lifespan of between 3 and 7 years, and it is also a battery with lead-acid, which means that it enjoys good autonomy.

It is one of the lightest inverter batteries and is compatible with other devices. However, if you use it for an inverter, you can plug a central unit and a screen into the inverter in question. Also, if you have small remote-controlled cars, a quad bike, a scooter, and other devices that require a battery of good battery life, then the Eaton 68771 battery is a good option.

In terms of its features, this battery has a voltage of 12V and a large enough capacity for you to connect a central unit and a screen to the inverter in which you intend to put this inverter battery. In the end, this battery for the inverter, although not the best performing on the market, enjoys a correct and satisfactory battery life.

An inverter is nothing without a powerful battery. The ideal would be to install a battery, preferably with lead-acid, to have good battery life and an extended lifespan. Eaton 68771 presented itself as the ideal candidate for this title.



Long lifespan: Its lifespan is estimated to be between 3 and 7 years. Its purchase will therefore be a good sustainable investment.

Lead-acid battery: This type of battery has a good battery life, a necessary condition for use with an inverter. Also, lead-acid batteries are much more environmentally friendly.



Quite expensive: Its price is higher than average. But since this battery should last several years, then we can say that the investment is worth it.


How do I use an inverter battery?

The inverter is the device that takes over when the electricity goes out, and your computer continues to run. It thus feeds the latter. But in reality, it is the current stored by its battery that the machine will use. Therefore, we will have to take care of this battery. If you haven’t known how to do it with the old one, you’ll find out with the new battery you just bought. To do this, read our following tips.

Refer to the instructions

The batteries offered by the different brands on the market all have their own peculiarity. Their lifespan and effectiveness vary depending on the model. But not only. Their technical characteristics are not the same. To ensure the longevity of your new battery, the first thing you should do would be to find out about the things it can’t stand or make it fragile. To do this, browse the entire record.


Replace the battery correctly.

To replace the old battery with the new one, you just have to follow a few steps. First, disassemble your inverter by removing the outer part. Then unplug the old battery. To do this, remove the threads from the positive and negative boundaries of the latter. Now install the new one, connect the inverter’s red thread to the generator’s positive terminal. As for the negative terminal, connect it with the black wire. That’s it; the installation is done. All you have to do is close the inverter.


Recharge it

Now that your battery is in place charge it. Like any new standalone device, your inverter’s battery must also be fully charged. This step is necessary to get used to the various variations in the load level it will have to bear. This will not be easily damaged. Also, after a long power outage, consider recharging. This, by plugging the inverter into a socket before turning it on. A green light will tell you that it is taking care of itself.


Avoid completely unloading it in some cases.

As we have already told you, there are different kinds of batteries on the market. There are acidic ones, frost ones, and dry ones. Well, be aware that acid batteries are susceptible to the charge/discharge cycle, especially when they are discharged at more than 50%. Dysfunctions can occur once this level is reached. This can even destroy your inverter’s generator. Be sure never to forget to properly charge your inverter, especially when you have an acid model.


Take care of your inverter battery.

The battery of your inverter is the element that testifies to the effectiveness of it or not. So if you want to take advantage of your investment, take a few factors into account. One of them: the surrounding temperature. Ideally, it is 25oC. Temperatures over 33.3 degrees Celsius would greatly reduce your battery life. This is due to the elements that compose it and which transform once this temperature is reached. Another factor to watch out for is corrosion. If corrosion occurs at the branch level, the inverter may be less effective. Preventive maintenance is therefore carried out.


When to change my inverter battery?

The inverter provides the electrical autonomy of the devices connected to it, thanks to the built-in battery. This component is sort of the mainstay of this kind of device. However, the lifespan of this element is limited. It should therefore be taken care of so that the inverter can withstand for a long time. We will try to reveal how this component works to know the right time to change it.


Inverter, a device of great use

An inverter primarily acts as an energy reserve to power the equipment attached to it during a power outage. That’s not all, because it can also be used as a voltage regulator in some cases. This is a device that is recommended when using a desktop computer. Experts also recommend using it in areas where there are often variations in electrical voltage.

This device stores the current in a battery to be redistributed during a power outage or when the voltage drops considerably. However, it should be noted that the inverter does not provide significant autonomy. In general, it only offers a reprieve that allows your appliances to be turned off normally following an electrical failure. The best-performing models on the market can provide a half-hour battery life. However, this duration may decrease depending on the number of devices that are connected to it.


The life of an inverter battery

Several factors come into play to determine the durability of an inverter battery. First of all, be aware that the conditions of use of this device affect its longevity. Therefore, it is strongly advised to follow the manufacturer’s instructions for use. This way, you don’t risk mishandling that could affect the lifespan of this material. Of course, you will always have to refer to the manual to solve malfunction problems.

Also, the maintenance of this device can have significant impacts on its working life. Hence the importance of taking care of it daily so that it also maintains all its performance. You will find maintenance instructions in the product instructions. Otherwise, you could also find them on many websites.

According to expert estimates, an inverter battery can usually be used for between 3 and 5 years, depending on all the factors raised. Therefore, it is essential to follow the usual guidelines to the letter if you want to save money.

There is not really a specific recommendation as to how long the battery should be changed. However, it is necessary to remain very attentive to the potential of this equipment. Over the years, you may find that battery life decreases greatly. At this point, you should anticipate the change because if the deterioration persists, the inverter will no longer be able to power your appliances. You may then lose your data or even have your equipment damaged in the event of a power surge.


Successfully replacing an inverter’s battery.

Subjected daily to severe stress, the battery of an inverter ends up losing its performance during use. Indeed, she makes endless cycles of load and discharges throughout her life. The amperage of this component makes it possible to determine its autonomy. The higher this factor, the more functional the inverter remains during a power outage. However, this parameter relates to the measurements of an inverter.

If your inverter’s battery has given up, you don’t need a professional to make the change. You can do it yourself without having to make any additional expenses. Here are the steps you need to take to extract the component to install the new battery quickly.

To begin with, first, consider disconnecting the inverter from the electrical outlet and computer. It is better to work off to avoid the risk of an accident. Then remove the screws below the device or move the hatch to disassemble the hood easily. After that, simply remove the hood and unplug the worn battery. If you have some difficulties during this stage, pull as hard as possible to eclipse the pods. You will then have to place the new battery. Also, make sure the polarities are well respected. Once this is done, you can close the device because the change is successful. Finally, all you have to do is reconnect the inverter to the area to charge the new battery you just installed.


Optimize an inverter’s battery life to limit frequent changes

The battery of an inverter does not last a lifetime; it gradually deteriorates and loses its power every time it discharges. However, there are simple tricks to improve its longevity. With these tips, you could enhance the performance of this component, so you don’t have to change it too often. First, it is necessary to follow the letter the storage instructions of this element, as this affects its longevity.

For example, it is recommended to use it in a space where the temperature is 25 degrees Celsius. Indeed, this device does not tolerate temperature changes. Therefore, you should follow this instruction if you want it to work properly and especially to prolong its life.

The battery of an inverter requires special attention to maximize its performance in use. That said, preventive maintenance is recommended to strengthen its autonomy. This initiative is especially recommended for large inverter models. Among other things, it anticipates risks such as corrosion and increases the reliability of this element.


What do inverters do?

Inverters are electronic devices that convert low DC voltage 12/24/48 (sometimes 96B and above) from a rechargeable battery into a 220V AC voltage.

There are single-phase and three-phase inverters. For the vast majority of consumers in the house is enough one-phase inverter.

The Chargers reverse conversion from 220B AC to DC voltage to battery power.


Renewable energy systems

In a conventional power supply system based on renewable energy (solar or wind), energy is converted to 12, 24, or 48B and charges batteries. Therefore, an inverter is needed to convert the voltage from AB into a 220B AC voltage. Inverters differ in the level of input voltage (12, 24, 48B, etc.), which equals the nominal voltage of AB.

If you are on a trip, a car inverter will be handy. It can be connected to 12B AB in the car and get 220B ac to power different household loads.

A small solar panel can also be mounted on your car or caravan and used to recharge the battery in the parking lot. Similarly, a solar panel and/or a small wind turbine can also be installed on a boat or yacht. It makes sense to put an inverter in addition to such a system so as not to be limited to CONSUMERS of DC 12B.


Backup electricity with inverter

Even though you may prefer a diesel or gasoline generator as a backup energy source, it always makes sense to have a battery-powered inverter to provide backup power if the power outages from the grid are short-lived.

What’s more, you may find that the fuel is running out. With the battery and inverter, you may not notice the lack of electricity for the first few hours or even days even if the generator and fuel are all right; in case of long-term accidents in the networks, you need to be able to give the generator rest (usually air-cooled generators do not work for more than a few hours in a row).

Also, if the power of consumers is much less than the power of the generator, the latter will work extremely inefficiently. A small load is better nourished from the inverter.

It is advisable to feed low-power loads such as lighting, LED TV, player, and computers from the inverter.

Simultaneously, if you power a powerful load from the inverter, your battery will quickly run out. Therefore, a powerful load is better still to feed on the generator. Cm. Below are tips on choosing the right inverter for your electricity consumers.


Do you need an inverter with a clean sinusoid on the way out?

For any inverter application, you have to decide whether you need an inverter with pure sinusoid or you are sufficient to have a much cheaper inverter with a modified sinusoid on the way out.

Many people start with an inverter with a modified sinusoid because such inverters are about 2 times cheaper. Unfortunately, in most cases, such inverters are not suitable for most energy consumers.


Which inverter is best for your case?

The quality of sine waves on the output of the inverter affects the inverter’s ability to feed a specific load. Consumers who have electronic boards require an inverter with a pure sinusoid. Inverters with modified sinusoids can create an unacceptable level of interference on the feeding circuits, which can disrupt the proper operation of electronics.

Many modern electronic devices use complex control circuits that require power from a source with a pure sinusoidal form of voltage. Examples include computers, laser printers, smartphone chargers, power tools, modern washing machines, etc.

Even though their own battery powers most laptops, it’s better to power your charger from a sine source when you charge it from the network- it’s going to be more reliable and efficient.

In general, the microwave, small refrigerator, DVD player, etc., will work normally and from the inverter with a modified sinusoid. However, if the microwave or refrigerator is an inverter (and these are now more and more on the market), they are better nourished by the sinusoidal inverter.


Another important difference between sine and non-sinusoid inverters is their own consumption.

Practice shows that non-sine inverters of low power consume less energy for their own needs. This is due to a much simpler power key management scheme. In sinusoidal inverters, the consumption is higher because more sine waves are needed. However, this difference is smoothed out by the increase in power, and at a capacity of several kilowatts, own consumption of both types of inverters is about the same.

But the efficiency of the load when feeding on quasi-in seoids (and even more so from the meander) is much lower. Therefore, the overall efficiency of the “invertor” load is likely to be much higher when using a sinusoidal inverter.

Therefore, you will get less useful energy from your battery if you power the load through a cheap quasi-insectoid inverter. This means that you will discharge the batteries deeper to ensure the same load time.

Deep battery discharges lead to its premature failure and replacement – and no savings from buying a cheaper non-single-inverter you will not have – and will be an extra waste of money on early battery replacement.

This was one reason why we have almost completely excluded quasi-single-old inverters from our range – we care about our customers and want them not to be disappointed in the equipment we bought from us.


What power do you need?

The range of capacity for non-sine inverters is usually from 150 W to about 5 kW. The range of capacity for sinusoidal inverters is usually from 300 watts to 10 kW (there are inverters with a capacity up to 18 kW, but this is rather an exception to the rule).

With more than 6 kW, increased (more than 48B) battery voltage is required. Otherwise, the current from the batteries becomes very large, and very thick wires are required to eliminate losses in them. For example, with a capacity of 10 kW, the current consumption from the 48B battery is more than 200A! Cm.

Our tips for choosing a cable section to connect the inverter with the batteries.


What power does the inverter choose?

What is the peak power of the inverter?

Probably the most important parameter to consider when choosing an inverter is its peak power, i.e., the power it can give out when you start your load. Some consumers have very high power requirements at launch.

For example, a small refrigerator can consume about 300 w. However, to run its compressor will require 4 or even 7 times more power! And this power within a few seconds should provide your inverter. Otherwise, the compressor will not start, and the inverter will turn off the overload and disconnect all your consumers from power.

When choosing the inverter’s power, it is important not to get confused in these watts – nominal, peak, start-up, etc. If your air conditioner has a capacity of 800 w and the starting currents are 5 times more than nominal, but this inverter will not be able to run it.

Here, many people make the mistake of choosing an inverter because they can not understand that some consumers require much more power than written in their technical characteristics. From the network, this launch power can be easily obtained, but from the inverter – no.

Another example is water lifting pumps. They are tough to run under load because they need to raise the water greatly. Typically, the submersible pump’s capacity is 5-7 times greater than its nominal capacity. The exception is pumped with a smooth start system, but the cost of such a system can be comparable to the cost of the inverter.

Therefore, to power a small refrigerator or pump with a capacity of 600 watts, you will need an inverter, which can give out a short-term to 3000-4000 watt. Given that the inverter’s peak power is 2 times the nominal, you need to choose an inverter with a nominal capacity of 1.5-2 kW.

On the other hand, if you buy an over-powerful inverter (such as 5 kW) to power a load of 600 w – you have a risk that the energy from your AKB will be spent quickly and inefficiently.

This is because the efficiency of the inverter is usually a fraction of its nominal power. Moreover, the maximum efficiency specified in the specifications on the inverter is usually achieved when it is loaded at 60-85%.

With consumption capacity less or more of this optimum, the efficiency is lower. Cm. Graph of a typical efficiency of the inverter.

These two factors mean that instead of the stated efficiency of the power load from the inverter in 80-90%, you will get a maximum of 30-40%. This may mean that the inverter consumes as much energy as your load on its own. For example, for the same case of power load 600W from 5 kW inverter.

Own consumption of a good inverter of such power is about 50-80W (this is already 10% of the load capacity). Peak efficiency is usually stated at 80-85%, but when the power load is almost 1/10 of the nominal capacity, the efficiency will be about 60-65%. That is,

in the inverter, you’ll lose about 600.4 to 240W.

Therefore, it is essential to choose the power of the inverter of the appropriate power of your load!


Portable and non-portable inverter generators

Do you need to have a portable (portable) energy source? For systems with solar panels and wind turbines- most likely not. Backup power at home with large batteries also hardly requires portability. Car inverters should be portable.


How to choose the right battery for the inverter

For the average person, the battery is a “black box” whose main distinguishing characteristic is the container specified in the amp-hours.

But professionals are well aware that there are many more fundamental differences. Let’s get this sort out! To begin with, we classify batteries for uninterrupted power systems.

AGM Battery for Fire Systems (OPS Segment)

These are the cheapest batteries designed to work in low-precision systems (video surveillance, alarms) for 1-3 years with subsequent replacement. Construction, lead quality, electrolyte composition are designed to maximize cost reduction. As a rule, the capacity of such AKBs is noticeably lower than stated, they have high internal resistance, and they are quickly subjected to sulfation (loss of capacity).

These AKBs include:

  • Delta DT Series
  • Alarm Force
  • General Security
  • Security Force
  • Optimus and others.

However, some manufacturers position the brand of their batteries as suitable for both UPS and inverters, although, in fact, it is an AKB. How do you define this? The most important and visual characteristic is weight. For the landmark:

  • The 7Ah AKB should weigh at least 2.1kg. Moreover, you should trust the indication of scales, not specifications.
  • Capacity 100Ah – from 31kg and up
  • Capacity 200Ah – from 62kg or more.

Below is a video that understands two ops batteries of the segment.


AGM batteries designed for long discharges – from an hour or more

These ACBS have a lifespan of 5-12 years, depending on the series. They use high-quality lead and electrolyte with special additives, which act as inhibitors of the process of sulfation and corrosion. These batteries properly and correctly give their capacity for long (from an hour or more) discharge and charge quickly (up to 0.3C); their capacity usually corresponds to the stated.

However, these batteries do not tolerate short discharges. Because of the high internal resistance, they are strongly sagged by the voltage on a high load and quickly sit down. In other words, these short-range batteries will give significantly less energy than the High Rate series (about it a little later). What’s more, they can quickly fail.

These AKBs include:

  • Delta DTM Series
  • BB Battery BPS
  • Leoch DJM
  • CSB GP
  • Haze HZB
  • Challenger A
  • Yuasa NP
  • Panasonic LC-R


Battery AGM

Gel batteries

Focused on working with alternative sources of energy in a cyclical model. A gel-forming component has been added to the GEL electrolyte, resulting in an increased number of charge-discharge cycles but becoming more demanding of the charge. Such batteries should be used with solar energy, with windmills, i.e., in a daily cyclical mode—a detailed comparison of AGM and GEL technologies.

Examples of such AKB:

  • Delta Series GX
  • Leoch Series LPG
  • Ventura VG
  • Haze HZY
  • Sonnenschein A


AGM AKB Series High Rate

The batteries are designed for short discharges to maintain a high load for several minutes to several hours.

These batteries use the highest quality components: pure lead, agents and additives in the electrolyte, a special coating of anode and cathode. The area of contact between the plates and the electrolyte increases to reduce internal resistance. High Rate AKB is correctly discharged on both long discharges and short.

The voltage drawdown at high load is within acceptable limits: the UPS works correctly and does not disable the low-voltage DC busload. The number of cycles is about 30% higher than that of the AKB of long-term discharges. The cost of such batteries is noticeably higher, but this is due to the high cost of manufacture. HR batteries are the highest link in the evolution of lead-acid technology.

Examples of such AKB:

  • CSB Series HR, HRL
  • Delta Series HR, HRL
  • BB Battery HRC
  • C&D Technologies UPS
  • Fiamm FGHL/GS, FGH/GS, and others


Other types of AKB:

  • Lithium batteries. Expensive, and at the moment, very few UPS/inverters support the correct work with this kind of AKB, so we will not consider them yet.
  • We do not recommend using traction AKB in UPS due to the need to maintain and release hydrogen during the charge.
  • The AKB also emits gas during operation, although this problem can be solved with special absorbent valves. It can be used in cyclical systems.
  • OPzS is used in highly specialized systems.
  • Automotive batteries serve in buffer mode for 1-1.5 years, and then their thin lead platinum crumble.


 Inverter Battery running time

After studying this article, you’ll find out which batteries are best suited to power the country house smoothly, and if necessary, you can calculate how much the battery inverter will work when you turn off a centralized supply, fuel generator, or other energy sources.

Also, we will advise on extending the battery life of the electricity system based on converters.

Type of AKB

For uninterrupted or backup power systems, only deep-cycle batteries are suitable. Unlike starter (car) analogs, they can tolerate long-term charging and discharge.

The products are durable. The resources of modern models are enough for 12 years or more of operation. The car analog will fail after 10 discharges.

Deep-cycle batteries are:

  • Gel, the electrolyte, is a gel-like mass;
  • Lead acidic (AGM), the electrolyte, is found in the pores of plates made from thin glass fibers.

Both types of batteries have their pros and cons.

Gel models have higher efficiency. Devices can be placed in any position because there is no liquid electrolyte. It is even possible to operate an inverter from a battery with a damaged body. GEL technology was developed for aviation and military industries. Statistically, the gel batteries work a little longer than AGM analogs in the cyclical mode of operation.

The shortcomings of the equipment include the need to support the exact current recharging (gel batteries are used with microprocessor controllers) and the possibility of swelling and explosion of the AKB when the electrolyte boils.

There are no disadvantages to AGM batteries. The advantages of batteries of this type also include high resistance to deep discharges (devices withstand more than 600 such cycles).

AGM technology maintains a consistently high current strength at any degree of battery life. Another advantage of such AKB is the low self-discharge. During the year of downtime, the capacity will be reduced by only 20%.


Calculating the battery life of the backup power system

Calculating the power of the inverter will require the construction of a special table. In two columns, add a list of electrical appliances and the power they consume. That’s how it’s going to turn out.

The higher the capacity of the AKB or battery system, the longer the connected equipment will last in the absence of a centralized electricity supply or access to other energy sources.

To calculate the battery life of the battery life inverter from batteries, you need to know:

  • Capacity and number of batteries
  • power consumed within an hour.

The calculation process should take into account the fact that the maximum power of electrical appliances does not reflect the real load on the AKB. The devices are on and off. In many cases, the power consumed by the equipment is well below the maximum value.

Let’s take an example. In this case, the inverter is connected:

  • Electric kettle
  • Class A refrigerator;
  • 15 energy-saving lamps;
  • Engine and recoil control system
  • boiler with a forced burner;
  • 4 circulating pumps of the heating system;
  • well, pump.

We calculate the average hourly rate of energy consumption of the devices. That’s what we’re getting.

An electric kettle of 2kW, boiling water for 6 minutes, i.e., 1/10 hours (provided that it was turned on only one time in that hour) 200 W/H

A-class fridge 70 W/h

Energy-saving lighting lamps (each 20 w/h), for example, only 15 lamps are lit 300 W/H

Gate 1.5 kW, opening and closing time – 1 minute (2 hours, 1/30 hours) 50 Вт/ч

Boiler with forced burner 100 w/h and 4 circulating heating pumps at 75 w/h each 400 Вт/ч

The good pump is 3 kW, turns on 3 times for 2 minutes in an hour (6 mins, 1/10 hours), 300 W/H

Total: 1320 Вт/ч

Now we calculate the total capacity of the existing batteries. Let’s say there are 12 12-volt AKBs in the system (the capacity of each is 200 apmer-hour). We get 12 to 12,200 watts per hour.

We take into account the loss factor. The example looks at new batteries. The maximum efficiency is 95%. We receive 2800-0.95-27360 w/h.

Now we will divide this value into an average hourly load and eventually get the inverter running time from the battery. 27360/1320 x 20.7 hours Round the result in a smaller way. It turned out that the battery system will last for 20 hours of battery life of connected equipment.

In this example, we looked at a typical (theoretical) calculation. Many different factors affect the battery life of the devices. Among them:

  • Age and battery life
  • Ambient temperature
  • Real mode of operation of connected equipment;
  • Et al.


How to extend battery life

  • Install not incandescent bulbs but energy-saving analogs.
  • Instead of top lighting, connect the floor sockets to the inverter and use them only if necessary.
  • Don’t add “extra” permanent equipment to the system. An example is the circulating pumps of warm floors.
  • Use alternative energy sources. Solar panels and wind turbines significantly extend the time of autonomous electricity supply.


Powerful batteries for Inverter

The energy base of modern backup power systems is specialized non-service (non-topping) high-capacity batteries made using GEL (gel) or AGM (fiberglass) technologies. Externally, they are similar to car batteries (only larger). But there’s actually a big difference.

Why conventional starter batteries are not good

For many, it is obvious that cheap serviced starter-type batteries are not designed to equip inverter systems of backup power to cottages. Less obvious is that more expensive non-maintenance auto-batteries (executed using the same AGM technology!) are also unsuitable for backup electricity.

And it’s not that they’re “bad” or “worse” than specialized batteries for uninterrupted power. It’s about a fundamentally different purpose!

The car battery should provide a large current for the starter to operate within a few seconds, which should crank out the massive inner parts of the engine. It is implied that the battery charge falls slightly and should have time to recover even in a short trip fully.

In long discharge cycles (and this is a normal mode of backup electricity), starter batteries quickly fail. Experienced drivers know that if the battery is discharged to zero several times in a row, it will no longer work normally. No matter what happened, the only way out is a new battery. It is clear that with such data, car batteries are not suitable for the backup electricity supply of the cottage.


Benefits of specialized batteries

The mode of operation of the backup power system determines the main requirement for batteries – they must withstand a deep discharge.

Unlike automotive, specialized batteries are better maintained after deep discharge.

They can give energy for a long time (hours and even a day) to a state where the energy reserve (designated as “charge level”soC – State of Charge) drops to 20-30 % of the original value (i.e., the depth of the DoD /Deep of Discharge / reaches 70-80%).

Of course, an intense discharge for the battery does not pass. And the main difference is already among specialized batteries – among the cycles of deep discharge, which they withstand without significant deterioration of energy intensity. According to this parameter, non-service batteries for backup electricity are conditionally divided into two categories:

  1. General Purpose AKB
  2. Deep cycle

To explain the differences between them, first explain the conventional terminology:

  • Depth of Discharge depth, the opposite of soC charge (DoD 100% – SoC)
  • Deep discharge is a discharge with a DoD of more than 40-50% of the full face value of the battery capacity.
  • Buffer mode (characteristic for backup power supply) – the batteries are fully charged and ready to operate. Still, such inclusions occur infrequently, and external power is restored before the batteries are completely discharged (the depth of the DoD discharge is usually no more than 30%, but for “extreme cases,” allowed a maximum of 80%).
  • Cyclical mode (characteristic of autonomous electricity) – constant alternation of deep (DoD discharge 40-50%, possibly up to 80%) discharges and charges.
  • The lifespan of nominal life is the number of years since the start of the operation. The battery will keep its capacity at least 80% of the face value when working in buffer mode and ideal conditions (t-20-25C, constant recharge).

In general, the extreme limit of battery life – up to the residual capacity of 60% denomination. But the schedule of loss of capacity is non-linear, so at least after the mark of 80% to operate the battery is still possible. Still, further, the drop in capacity is accelerated.

  • Cycle life is a real lifespan calculated in charge discharge-recovery cycles that the battery will withstand until capacity is reduced by 80% of the face value. Recalculation in “years” is dividing the number of cycles by the number of outages per year.

If outages are rare, and the number of years in cycles is even longer than the nominal term, you need to focus on the nominal lifespan because it is determined by the natural “aging” of the battery materials and can not be surpassed.

  • Cycle development from the depth of the Cycles life vs. DoD discharge depends on the number of discharge-recovery cycles to the “death” of the battery on the “deep discharge.”

The characteristics of the life of the service should be understood the following – the values of these conditional: the nominal term is only for unrealistic working conditions, and the number of cycles on the depth of discharge to predict problem because the discharge at each disconnection can be different.

However, “Nominal lifespan” and “Cycle development from the depth of discharge” do not allow accurate prediction of the duration of battery replacement but make it possible to compare different batteries among themselves.


Optimal AKB backup electricity

The difference between AGM and GEL, as well as general and deep-level batteries, is demonstrated by the table of the dependence of the number of cycles on the typical depths of the discharge:

Battery depth 100% 80% 50% 30%

Non-service general destination (buffer and limited cyclical mode)

Delta / Haze AGM (Class 10 / 12 years) must not 200… 250 450 900… 1000

Delta / Haze GEL (class 10 / 12 years) up to 200, but not recommending 300… 350 500… 550 1200… 1300

Unserved deep discharge (improved resistance to cyclical mode)

Trojan GEL DeepCycle (under 12 years) Not recommended 600 1000 2000

BAE tubular GEL OPzV (under 15 years) Not recommended 1300 2800 5000

– the data of manufacturers from the descriptions of the relevant lines of the AKB (real, according to experience, maybe less!)

At first glance, deep-discharge batteries seriously benefit from general-purpose batteries. But such superiority, of course, has a price – unserved Deep Cycle is noticeably more expensive than identical general purpose.

Let’s look at the general-purpose AKB in terms of the real practice of use in the Moscow region (after all, with the stability of the electricity supply, we still have better than anywhere else in the mountainous regions).

Manufacturers of general purpose AKB, stating the lifespan of 10-12 years, rely on the buffer mode of operation. For example, a conditional situation where outages occur weekly (50 times a year) and the battery capacity is chosen so that it has time to run out no more than 50% before the power is restored from the network. In this case, we divide 50 times a year and get the 10 years we want.

Yes, in real life, not everything is so perfect. It is easy to imagine a situation when the batteries begin to charge after a long operation, do not have time to gain 100% capacity, and the power grid is turned off again. In practice, the depth of the discharge will exceed buffer values, and the battery will have to be changed earlier than the nominal life.

But even if you focus on the depth of the discharge 80%, it is 250 – 300 cycles before the battery. And this is a long and long period of work, during which the existence of a backup electricity system with unserviceable batteries can not even be remembered.

Therefore, the summary on batteries for typical backup power systems is as follows:

  • Gel general-purpose batteries are optimal in terms of price/performance convenience. At the same time, it is better not to take cheaper batteries of the class “5 years” because they will have to replace earlier batteries class “10-12 years” even in the case of notoriously rare outages (“5-year-olds” usually stand in office UPS and serve a good service to justify IT budgets, but we do not need it from batteries?).
  • AGM batteries are a low-cost option only for short outages or combinations with a generator. Give some savings in price, but only if you are sure of the rapid recovery of networks in your village or if there is a generator because AGM batteries after deep discharge require an immediate (and preferably full) charge.
  • Deep Cycle batteries are too heavy artillery for only backup electricity (except for situations of quite “environmental” corners with connection to weak rural power grids, where the backup is almost permanent). Deep-discharge batteries make sense to use for combined electricity (network in conjunction with alternative sources) and autonomous “weekend” electricity supply. Also, with some caveats, they are suitable for autonomous electricity systems with permanent residence.


The battery connection scheme to the inverter

  1. To get a battery voltage equal to the inverter,” individual 12B batteries are connected sequentially into a single chain (string).
  2. To increase battery capacity, successive battery chains connect in parallel.
  3. Cables from the inverter are recommended to connect to the “diagonal” (see.
  4. figure) terminals collected in a parallel-consistent scheme of the battery.

When assessing the capacity and voltage of the resulting battery, remember that:

  • The sequential connection of the batteries adds up the voltage (B), and the capacity (A-h) does not change;
  • When batteries/battery chains are connected side-by-side, the capacity (A-h) is added up, and the voltage does not change.

This rule shows how easily it can mislead the Battery Capacity Option (A-hour) without specifying battery voltage (than sometimes sin descriptions of inexpensive kits in non-specialized online stores).

The real battery energy reserve reflects its energy capacity, i.e., the product of voltage on capacity.

The table below shows that a battery with the same capacity in A-h will imply a completely different number of batteries (and, of course, energy reserve) for inverters with different voltage denominations:

Maximum energy intensity (80%) 12Whes200A-hour batteries

Inverter denomination 12B 24B 48B

The number of batteries 12B-200A-hour in the chain 1 piece. 2 4

Capacity 1 chain (A-hour) 200 A-Hour 200A-hour 200A-hour

Battery chain energy 1.92 kWh 3.84 kWh 7.68 kWh


Equipment on offer

We currently offer sealed non-service batteries manufactured by Haze Battery (English brand Haze, factory in China) and Delta (China).

Both manufacturers are good (so-called “state”). China: Haze is the official supplier for Megaphone and MTS; Delta also supplies huge batteries to regional telecom operators.

Haze/Delta gel and AGM batteries combine high-performance characteristics (reliability, durability) and low price.

Read more about these batteries here.

For backup power systems based on the most powerful model Outback VFX3048 most often used such battery kits:

  • 4 AKB 12B x 200 (220) A-H – battery 48B x 200 (220)A-h / weight of 280 kg
  • 8 AKB 12B x 200 (220) A-H – battery 48B x 400 (440)A-h / weight of 560 kg
  • 12 AKB 12B x 200 (220) A-h – battery 48B x 600 (660)A-h / weight of 840 kg
  • 16 AKB 12B x 200 (220) A-H – Battery 48B x 800 (880)A-h / Weight of 1120 kg

Also to order, we supply non-serviced GEL batteries Trojan (USA) category DeepCycle, which work much better in cyclical charge-discharge modes and have a longer lifespan.

All AKB supplied are produced according to international standards, certified, tested, and 100% suitable for backup power supply systems.


Solar batteries

Inverter systems are a great solution for your country house or cottage. If you design everything correctly, the life of your inverter will last very long, and it will work without any interruptions and constant maintenance.

Inverter scheme

It is difficult to arrange a comfortable life outside the city if you do not have a permanent and reliable source of electricity 220B. Even if food is lost for a short period of time, it can greatly interfere with your quiet life. And such interruptions, alas, often happen, especially in winter.

If the light in your cottage or the cottage is not very stable, do not avoid many problems with household appliances. How to deal with such a disaster at home? The easiest way to install a voltage stabilizer costing 2-3 thousand rubles.

The general home stabilizer will cost 20-30 thousand. It does a good job, but only if the voltage does not fall below 160-170 B.

But it happens that the electricity is cut off completely – then only uninterrupted sources will be saved.

There are various recommendations, the most common – to install a diesel generator costing from 50 to 100,000 rubles. But this device will also spoil your time spent outside the city – it produces a lot of noise, requires meticulous maintenance, and pollutes the air.

Inverter battery system

But you can install an inverter battery system.



Which inverter to choose

Russian inverters are, of course, cheaper than American ones, but they cannot change the way batteries will be connected: with what charge algorithm, the threshold of start-up, how third-party sources will be controlled.

Setting up these parameters helps to use the AKB more safely, smoothly switch to mode, allows you to use inverters in parallel. American systems are more reliable; they live longer and last longer for the benefit of your home.

There are two types of inverters: online and offline. In online inverters, the discharged battery starts to work simultaneously and recharges from an external power source (for example, this principle of operation is typical of a car battery).

However, such a composite mode actually has a terrible effect on the batteries, makes them work for wear, and quickly endures life. The offline inverter is much more secure for batteries – here, at the same time, the battery is either charged or discharged. This is a more gentle mode of operation.

Offline inverter

Therefore, calculating to identify a more reliable option, pay attention to offline inverters.

Don’t forget to take into account the quality of voltage as well. Imported models give a voltage of 230 V. Usually; one AKB has a voltage of 12 B. The distortion rate is quite low – from two to three percent. These models use a special algorithm that forms the output of sinusoidal voltage, high-quality transformers, and consistent filters to achieve this.

How much does the inverter work?

The inverter has no internal batteries. Instead, it uses external batteries. This makes it possible to pick up the number of batteries that will provide the necessary period of independent operation of the device uninterrupted electricity.

Let’s talk more about the time of independent operation of the system. To calculate the charge time, you need to divide the amount of battery by the power of the current it produces (in amps).

To determine the strength of the current battery (IAC), we rely on energy conservation law. The efficiency of the inverter will be equal to one hundred percent. We need that multiplied volts and amps of the Inverter Battery are equal to multiplied volts and amps at the exit.

Calculating the voltage of the AKB is 12 B (in stronger models, there are 24 B and 48 B); let’s call it UAC. The volts on the exit are a force connected to the P.P. load inverter.

As a result, we have the calculation of P-UCB, as well as IACB/UAC.

If we know the size of the SACB battery, we can find out how much it will run autonomously: TAVT q SACB / (PNAGR/UAB) qACBUCB/PNAGR.

So let’s say we have an inverter that has a 55-hour battery connected to it. Let’s calculate how long he will work independently.

  • UAKB q 12 B
  • PC game q 300 w
  • CACB – 55 Amper hours

We calculate TAVT q AKBCB/PNAGR q 55/12/300 q 2.2 hours.

And the other question is what kind of battery is needed to provide a certain duration of operation: THE CACB

A block of twelve batteries

For example, let’s calculate what kind of battery we need on a given inverter so that at a load of 300 w to provide 2.2 hours of independent action: CACB q 00/2.2/12 q 55 Amper’clock.

Solar collectors

The essence of solar collectors is to collect, store and transmit the warmth of the sun. Solar energy can be used for free and indefinitely; it does not require extraction and transportation. There are two main types of collectors – flat and vacuum.

Flat collectors

Flat solar collector

The design of flat solar collectors is insulated from a heat panel under the glass panel, inside which is an absorbing plate. It is it that accumulates the energy of the sun. However, even considering the insulation of the lower and sidewalls, in winter, the level of charge is much lower due to the loss of heat. Flat collectors are less adapted to temperature changes but are more common due to their low cost.

Vacuum collectors

The structure of vacuum solar collectors assumes that several vacuum tubes convert sunlight into thermal energy. The tubes themselves are similar to a normal thermos and consist of several glass tubes embedded in each other. On the outside of the tube, shine, and inside is the material, which collects sunlight.

Vacuum collectors

Collectors are located on the roof and/or walls of the house. Vacuum solar collectors are much better protected from temperature changes and better absorb heat, which is why they are adapted to work in cold times.


Which battery to choose

Determining what power source you need to provide the usual 220B in a country house, make a calculation and make sure that it corresponds to the system’s load. If the current value exceeds beyond measure, overheats, batteries fail faster. Thus, the usual system of the house is 9 kW, the voltage – 24B. If the system works at full strength will be more than 400A, which will quickly harm the battery plates.

It will require batteries with a voltage of 48B. If these requirements are met, the inverter system will last a long time.

Battery for inverter

Generally speaking, the price is the main indicator of the quality of batteries. Is it possible to save by providing good quality? The best way to do this is to acquire the entire system at once and gradually increase the capacity. First, we buy an inverter 3 kW, add to it new, because modern technologies allow fastening up to 10 identical inverters.

Welding inverter

Welding inverter, or inverter source of welding current – a necessary element in welding, transmits the welding arc more stable burning and easier to go. Inverters are most popular in welding because they, like no other device, can provide reliability and independence from the common network, eliminate fluctuations and interference.

The welding inverter is powered by the fact that the voltage of the network goes to the straightener, after which the power module makes the constant current variable. The alternating current is already sent to the welding transformer, which, in turn, provides them with the welding arc itself.

The welding inverter is good because, using it, you can significantly reduce the power transformer in size and at the same time increase the dynamics of the arc. Thanks to it, it was possible to reduce the size and weight of the welding machine, increase efficiency and reduce to a minimum splashing during welding.

Welding inverter

However, the welding inverter has several drawbacks. Its load factor is limited; it is quite sensitive to humidity and condensation. Its biggest drawback – it creates a very high, often even dangerous, level of interference. This problem can be solved, but all the now known solutions make the device more expensive and harder.

Solar battery

If you use solar energy at home, battery life will be significant for you. They act as an intermediary, transferring energy to the final devices and providing the desired voltage of 220B.

The greatest amount of energy the solar panel generates during the day when the sun shines brightly. When energy consumption does not occur at night, household appliances and various sources of artificial lighting are very widely used. You need a battery to make sure that there is enough electricity at night when the recharging will no longer occur.

Statistics say that the cheapest way to use Chinese-made lithium batteries and lead-acid batteries.

The most important battery options are:

  • volume. It is determined by how large the charge is measured during the return of electricity to the end device consumers.
  • Energy density. According to this characteristic, it is calculated how much energy batteries produce per unit of their volume or weight. Using this option, you can compare the degree of efficiency of different models.
  • Self-discharge. With this indicator, you can analyze how much energy the device loses when idling, how long it can store energy.

To enjoy clean sources of electricity and the necessary 220B all year round, the following operating conditions must be observed:

Unfortunately, the batteries do not stand up to sharp temperature changes; it is better not to stand in the heat more than 40oC and the cold below -25oC.

It is better not to place these devices near an open fire: vapors can ignite. Water and precipitation shouldn’t fall on the battery: due to the emergence of new electrical circuits, the occurrence of self-discharge currents is possible.

Different device cases also characterize battery batteries. Some require constant control of the electrolyte and fill its level when the vapors are boiled.


There are also airtight models; they use a closed-type loop. Some manufacturers offer unserviceable models and provide a guarantee of up to 5 years. Also produced low-maintenance models, which only need to add water twice a year.


How the charge goes

Processes in batteries vary accordingly by the chemical energy inside them. The amount of this energy is continuously reduced during discharge, which weakens current and tension. To return the energy, you need to apply a permanent current of high voltage in the opposite direction.

As a rule, the current is picked up using the following calculation: 100% of the nominal volume in the amps should be divided into 10, which will give the value of the current strength in the amps. This is not a very scientific indicator, but it is usually used to provide a cycle of charge of eight hours in practice. However, this number more characterizes rather expensive devices such as NiMh and NiCd rather than budget lead-acid.

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