4x AAA Duracell Rechargeable NiMH Batteries. Get hundreds of charges from these Duracell rechargeable batteries with each charge lasting up to six months! 1. 2V, HR03, 750mAh. Pack of 4x 1. 2V AAA, 750mAH, rechargeable NiMH battery. Battery type AAA, HR03. See pack for charging times. Always read label.