This is the simple Nicad Battery Tester Circuit Diagram.This battery
tester produces Nicad battery test at a speed of 500 mA. When an
endpoint 1 V (defined by the setting of R3) is resolved, pin 2 of U2
becomes low, deactivating Ql and disconnecting the test battery from the
circuit. Power for U3 comes from the 12-V regulator in series with the
battery being tested.
Nicad Battery Tester Circuit Diagram
A clock or timer can be plugged into SI to indicate the time it takes to discharge the battery under test.
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