Most nihm,s dont like to be discharged below 0.9v per cell as they can be damaged. If its been a while since youcharged any batteries remember not to charge them at more than 1c
eg if you,ve got 4200mah batteries set your old charger to nihm and charge at 4.2a (1c)
ifyou,ve got 3300mah batteries set charger to 3.3a
try to buy a balancing tray to keep them in good condition when you discharge them.
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