GP Batteries 120.65AAHCC2, NiMH rechargeable batteries. Battery technology: Nickel–Metal Hydride (NiMH), Battery capacity: 650 mAh, Battery voltage: 1.2 V. Weight: 13 g. Dimensions (WxDxH): 10.5 x 10.5 x 44.5 mm, Battery type: AAA