The high-capacity Canon BP-511A Rechargeable Lithium-Ion Battery features lithium technology, which ensures maximum battery life and maximum power. It also features no memory effect that lets you recharge partially drained batteries without reducing performance. Compatible Cameras EOS 20D, 20Da, 30D, 40D, 50D, 5D, D30, D60, Digital Rebel, Optura Xi, PowerShot G1, G2, G3, G5, G6, Pro 1, Pro 90 IS