The Canon BP-820 Battery Pack (1700mAh) is a replacement battery pack for Canon cameras. This battery pack gives you extended time while on the go. The BP-820 is compatible with Canon's VIXIA GX10, VIXIA HF G50, VIXIA HF G60, VIXIA HF G70, XA15, XA11, XA45, XA40, XA55, XA50, XA65, XA60, XA75, XA70. Lithium-ion batteries last longer and are resistant to the effects of "memory effect", meaning you can charge and recharge your battery without fear of draining the battery. Times vary depending on camcorder and shooting conditions.