Battery Tester Using NodeMCU

Hello, Makers!!

In this Instructable, I’ll show you how to make a Battery Tester using the NodeMCU.

The Battery Tester basically checks the voltage of 1.5V cells or even 3V button cells and by knowing this we’ll know how much charge is left. Like Red indicates that the battery is dead and Green indicates that the battery is full while Yellow shows the charge is still left-over.”


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