Kapaxen Two Intelligent Batteries + Dual Channel LCD Charger for Canon BP-820 and VIXIA HF G30, XA20, XA25 Camcorders BP-820 Battery Capacity: 1900mAh (Rechargeable) Intelligent Batteries Showing Remaining Recording Time Charger Input: AC 100V-240V; Dual Output Channel Li-Ion Batteries without Memory Effect Lasts 2.0 to 3.0 Hours with A Full Load