The nickel–cadmium battery (NiCd battery or NiCad battery) is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes. The abbreviation NiCd is derived from the chemical symbols of nickel (Ni) and cadmium (Cd).

Pocket Type Nickel Cadmium Battery capacity range is from 10ah to 1200ah, have three series: low discharge rate, medium discharge rate and high discharge rate.