Quick and cheap way to test any dead cell in lipo.
Just a cheap voltmeter will do.
Items needed:
12V car headlamp ~50W.
Since a car headlamp has 2 filament, run them in parallel will give 100W. Make sure you test which of the 3 pins is ground.
Run 1 headlamp will draw 10A
Run 2 headlamp in parallel will draw 20A.
Then check the voltage of each cell of a fully charged lipo while the headlamp is on.
Observe any voltage drop below 3V in 10s.
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