DC Battery Tester circuit

This is a DC battery tester circuit diagram. The circuit will work for DC battery from 1.5V up to 9V.

Electronic Parts List:
R1 = 18K Ohm
R2 = 240 Ohm
R3 = 8.2K Ohm
R4 = 3K Ohm
R5 = 10 Ohm
M1 = Panel Meter (Any Panel Meter will work)

Source: dc battery tester

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Power Supply Adapter

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