PowerDriver 1000mAh AA Rechargeable NiCD Ni-CD Batteries (24AA) Please use up the power each time, then recharge it or it will affect its capacity and lifetime NiCD batteries are a great choice when it comes to outdoor operating temperatures with strong performance They are the most common type of battery used in solar powered lights but can also be used in a wide variety of electronic items. Exact replacement for standard AA size battery in all the devices Long-lasting, exceptionally efficient source of energy