Nickel-metal hydride battery (NiMH) is a type of rechargeable battery commonly used in many laptop computers, as well in mobile phones, camcorders and other electronic devices.

The negative electrode of the NiMH battery is made from a hydrogen-absorbing alloy and sometimes many different inter-metallic compounds. The positive electrode is made of nickel-oxide hydroxide, the same as in Apple Nickel-Cadmium batteries.