Features: 1) High quality D size 10,000mAh high capacity nickel hydride metal (Ni-MH) rechargeable battery 2) Ultra long running time with this 9,000mAh high capacity 3) Very long life time and can be recharged up to 1,000 times 4) Can provide over USD1,000 savings over the life time of this rechargeable batteries by eliminating the need to buy hundreds of D-size alkaline batteries which cost USD2.50 a piece 5) Exact replacement for standard D size batteries and Ni-Cd rechargeable batteries 6) Convenient operation due to the advantage that Ni-MH batteries have no memory effect 7) Can be charged anytime 8) Can be rapidly charged with smart chargers and universal chargers 9) Battery tested based on International Electrotechnical Commission (IEC) standard to ensure capacity, quality and life timeSpecifications: 1) Dimensions (H x Dia.): 60 x 33mm 2) Weight: 0.36lbs per cell 3) Capacity: 10,000mAh 4) Voltage: 1.2V 5) Standard charge: 15 hours at 800mA 6) Rapid charge: 3 hours at 4,000mA