Ni-MH Mono/D 9000mAh 1.2V

Battery Code:  1.2V,  D,  HR3,  Micro
Size:    D
Voltage:   1.2
Capacity:   9000mAh
Chemistry:    Ni-MH
Height:   61 mm  Diameter:    32.5 mm  
Weight:   175 gram 

Last 3 times longer than standard alkaline in digital cameras
Can be charged up to 1,000 times
No "memory" problems - Recharges any time, even if partially drained
Ni-MH is safe for the environment and can be disposed of with regular trash