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Battery Indicator Module 12V (FXD-82B)
Li batteries proves to be very useful source of power but for long lasting performance you need to look on to key parameters carefully. Li batteries should be used in such a way that always 20% of the battery’s charge is left before recharging it. Failure to that may cause the battery dead, so now you would’ve known that knowing the charge in the battery is very necessary to keep the battery alive. Let’s design a simple circuit to know the percentage of charge in a battery.
I am going to take a 12V Li battery and keeping it as an example , the design the battery charge indicator circuit is explained below. Now for a typical 12V battery the voltage at various charge levels will be
