STK"s Canon BP-511 Battery - TWO PACK 2200 mAh BP-511A BP511 BP511A Lithium Ion Battery Pack for Canon EOS 5D, 50D, 40D, 20D, 30D, 10D, Digital Rebel, 1D, D60, 300D, D30, Kiss, Powershot G5, Pro 1, G2, G3, G6, G1, Pro90 is, Optura 20, Xi, 10, PI, 200MC, 1