Use smart-charger, cheap charger can’t tell you know when the battery is full, over charging or lack charging that meant your batteries will reduce life span. Most of chargers can use for NiMH and NiCD batteries. Some other update chargers are only charge NiMH battery because the NiCD is not common use. Most of old NiCD chargers are not good for NiMH battery. The old NiCD … [Read more...]