Amazon.com: Synergy Digital Camera Battery, Compatible with Canon FS20 Digital Camera, (Li-ion, 7.4V, 2600mAh) Ultra High Capacity, Replacement for Canon BP-820 Battery : Electronics
Amazon.com : Wasabi Power Battery for Canon BP-820 and Canon VIXIA HF G30, XA20, XA25, XA30 : Camcorder Batteries : Electronics