For NiMH, smart chargers typically tell you how many mAh it just put into the battery and stops once it reaches a set voltage. eg. you have a 1100mAh battery that is half depleted. It can then only cram another 550mAh (max- perfect situation) before it will stop since it will have reached maximum voltage
mA should be set at 1C and will slowly decrease as the battery gets fuller.
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