BP-511A BP-511 Rechargeable Li-ion Battery for Canon Digital Cameras Canon BP-511 compatible Li-Ion Battery (EOS 20D / 10D / PowerShot G3 / G5 / G6) Never run out of battery power when you're just about to capture the perfect moment! Time to get extra power for your digital video camera/camcorder. High capacity, rechargeable DC 7.4V Li-Ion battery with premium cell. Latest Lithium Ion battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). This battery will NOT be charged on Canon camcorders. A separate charging cradle is required on camcorders.