Nicad Battery Tester

Posted on Oct 16, 2012

This Nicad battery tester discharges the test battery at a rate of 500 mA. When the endpoint of 1 V (determined by set

Nicad Battery Tester
Click here to download the full size of the above Circuit.

ting 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. 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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