The Canon BP-809S Replacement Battery Pack is a rechargeable lithium-ion battery pack. The BP-809S features a capacity of 890mAh and 7.4V of output voltage.
Specifications:
Chemistry: Lithium-ion
Capacity: 890mAh
Output Voltage: 7.4V
Dimensions: 1.2 x 1.1 x 1.6" (3.04 x 2.79 x 4.06cm)