Buy ProMaster Li-ion Battery (7.4V 1600mAh) - Canon BP-511A - National Camera Exchange
Amazon.com : Canon Original Genuine Battery Pack BP-511 BP 511 Akku Batterie Li-ion 20D 30D 40D 5D : Electronics
Amazon.com : FirstPower BP-511 BP-511a Battery 2-Pack 2200mAh and Dual USB Charger for Canon EOS 5D 10D 20D 20Da 30D 40D 50D 300D D30 D60 and More Camera : Electronics
Canon Battery BP-511A (5/10/20/30/40/50D,D30/60,Rebel,G1-6,Pro 1/90) at KEH Camera
BP-511 BP-511A 2650mAh Camera Battery BP511 BP 511 For Canon EOS 40D 300D 5D 20D 30D 50D 10D D60 G6 BP 511A