BP-827 : 7.4 volt 3000mAh rechargeable Li-ION battery for Canon camcorders. Replaces original battery part #s such as BP-807, BP-809, BP-819, BP-820, BP-827, BP-828. 
Replaces battery model #s such as BP-828, BP828, BP-827, BP827, BP-820, BP820.
Compatible with Canon products such as: 
FS11 
FS21 
FS22 
FS31 
FS40 
FS200 
FS300 
FS400 
VIXIA HF11 
VIXIA HF20 
VIXIA HF21 
VIXIA HF100 
VIXIA HF200 
VIXIA HF G10 
VIXIA HF G20 
VIXIA HF G30 
VIXIA HF G40 
VIXIA HF M30 
VIXIA HF M31 
VIXIA HF M32 
VIXIA HF M40 
VIXIA HF M41 
VIXIA HF M300 
VIXIA HF M400 
VIXIA HF S10 
VIXIA HF S11 
VIXIA HF S20 
VIXIA HF S21 
VIXIA HF S30 
VIXIA HF S100 
VIXIA HF S200 
VIXIA HG20 
VIXIA HG21 
XA10 
XA20 
XA25 
XA30