4x AA Duracell Recharged Accu NiMH rechargeable Batteries. 1. 2V, HR6, 1950mAh. When not in use batteries retain up to 80percent of their charge for one year. Ideally suited for high drain or frequently used devices. Pack of 4x 1. 2V, 1950mAh AA, rechargeable NiMH batteries. Battery type AA, HR6, 1. 2V. See pack for charging times. Always read label.