Canon ZR-70MC Camcorder Battery Lithium-Ion (3000 mAh) - Replacement for Canon BP-522 Battery Replacement battery for the Canon BP522, Lithium-Ion (Li-ion) 7.4V (3000mAh) This Synergy Digital battery is fully compatible with the original Canon BP522 Battery. You can rest assured that this battery will work with your Canon Camera/Camcorders that use BP522 and it can be charged with the original manufacturers charger. We use only high quality Japanese cells, so you are sure this battery will last for years to come. Synergy Digital is a very high reputable company that manufactures batteries and other electronic accessories for over 2 decades, all our products come with a 3 year manufacturer warranty.