What is the Battery Management System & How it Works?

Does the term ‘Battery Management System’ ring a bell? If you own a battery bank at your home or workplace then the battery management system is one thing you shouldn’t live without.

The battery management system is a simple, compact and innovative product introduced by Su-Kam for the first time in India, solely manufactured for your batteries.

If you are frustrated with your battery’s reduced life or the money you spend in replacing your old batteries way too frequently then BMS is what you need.

If you have a battery bank, that is two or more than two batteries, then you must buy yourself a battery management system. Here is why:

Before we start, do you know that you can convert your existing inverter and battery into a solar inverter and battery? Click here to find out more about it.

What is the Battery Management System & How it Works

Why Battery Management System is Essential for Off-Grid Solar?

In an off-grid system that is a standalone solar system, the role of a battery bank is paramount. The batteries will store solar power in them and power your devices when required. The batteries used in such off-grid systems are usually rated 12V.

Now suppose you have a battery bank of 4 batteries. Let us first understand what happens to these batteries without a battery management system. When we talk about 12V batteries, the maximum voltage these batteries can reach is 14.4V and the minimum is usually set at 10.5V.

Now when your four batteries are charged together as a battery bank with an external charger, some batteries get overcharged and some remain undercharged, in the sense, there will be a slight mismatch between all four batteries.

This means that while some batteries get charged till 14V some remain at 13.7V or so. With further cycles of charging and discharging this gap will increase. Slowly some will get extremely overcharged reaching a dangerous voltage level of 15V and some extremely undercharged.

Because of these fluctuating high and low voltages, your battery will eventually stop giving you the backup you require. And then the battery manufacturer will advise you to buy a new battery and the cycle repeats!

How Battery Management System Works?

By using BMS you can completely avoid this harmful situation. If you connect your 4 batteries with a battery management system it will ensure that all the batteries charge and discharge at the same voltage level. All batteries will together get charged to 14.4V.

BMS will ensure your battery life gets extended by almost 6 months and also saves the excess money you will spend on buying a new battery.

I hope you are now clear about what is a battery management system and how it works.

Do you know that high temperature affects tubular battery life? Click here to find out how to overcome this issue?

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1 thought on “What is the Battery Management System & How it Works?”

  1. I want to start solar business so please tell me about this plan , how can i start soler business. So please help us.


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