This battery uses a hydrogen absorbing alloy for the negative electrode instead of cadmium. They are interchangeable with most NiCd batteries, but NiMh batteries have a greater capacity and they are more environmentally friendly.
The positive electrode for this battery is nickel oxide hydroxide and the negative electrode is a hydrogen absorbing alloy. Like alkaline batteries, NiMh batteries can also be found in AA, AAA, C and D sizes. But these batteries are mostly compared with NiCd batteries.
Very popular in today’s society, NiMh batteries are often found in high drain devices such as digital cameras. But because these batteries are re-chargeable, they can also be found in items that need batteries replaced often such as children’s toys and game controllers.