The Canon BP-820 Lithium-Ion Battery Pack is small and lightweight, and can be charged or discharged at any time without developing memory effects, meaning it will never lose its ability to hold a full charge. It has a voltage of 7.4V and a capacity of 1780mAh.
Compatible With:
LEGRIA HF G10
LEGRIA HF G20
LEGRIA HF G30
LEGRIA HF M30
LEGRIA HF M300