Power various electronics, including digital cameras and gaming devices, with this 4-pack of ready-to-use Powerex Pre-Charged Rechargeable AA NiMH Batteries. Each has 1.2V of output power and a capacity of 2600mAh. Thanks to their very low self-discharge rate, the batteries will retain up to 85% of their charge after one year in storage. They can also be recharged hundreds of times. A battery case is supplied along with the AAs.