ABSTRACT
For many years nickel cadmium (Ni-Cad) batteries have been the standard power for portable video cameras. With the growth of portable computers and mobile phones, new battery technologies using nickel metal hydride (NiMH) and rechargeable lithium (Li-Ion or Li) have been developed but at present Ni-Cad batteries form the main proportion of professional video batteries in use. The camera/recorder is normally powered by a 13.2 V or 14.4 V nickel-cadmium rechargeable battery clipped to the back of the recorder. There is a range of different capacity batteries available to give extended running times, or several batteries can be grouped together and worn on a belt. In general, digital recording requires more power than analogue recording.
