Ni-MH battery
Nickel-Metal Hydride battery. Rechargeable batteries that have an energy density 100% higher than NiCd batteries and can supply high energy levels when required, e.g. when using the flash in quick succession. They can be recharged more than 300 times and are environmentally-friendly (free of cadmium and mercury). Among other devices, Ni-MH batteries are used to power digital cameras.
