Rechargeable Battery, Battery Size AA, Battery Chemistry Nickel-Metal Hydride, Voltage - Batteries 1.2V DC, Recharge Time 5 hr, Capacity - Batteries 2,300 mAh, Shelf Life 3 yr, Rechargeable Up To 1500 Times, Precharged Yes, Max. Operating Temp. 122 Degrees F, Min. Operating Temp. 32 Degrees F, Standard Battery Pack Size 2, Standards ANSI-1.2H2, IEC-HR06, Diameter 0.6 in, Height 1.9 in, Overall Height 2 in, Standard Battery Series Recharge Power Plus, Package Quantity 2