NiCad

Abbreviation for "Nickel Cadmium". NiCad is a type of rechargeable battery that is similar to NiMH (Nickel Metal Hydride) batteries, but contains cadmium and mercury, which is expensive and dangerous to the environment. NiCad batteries experience the dreaded "memory affect" or "voltage depression" caused by incorrect charging and have a lower capacity than NiMH batteries.