Rechargeable (or secondary ... They are typically manufactured as small cell batteries in order to limit the amount of silver used. Nickel-metal hydride (NiMH) batteries are similar to the NiCd type ...
Buyers can select between two basic types of batteries. Primary batteries are disposable, non-rechargeable devices ... while secondary batteries may use nickel-cadmium (NiCd), nickel-metal hydride ...