BP-511 Battery or Dual Charger for Canon BP511A BP-508 BP-512A BP-522 BP-535 | eBay
Amazon.com : ValuePack (2 Count): Digital Replacement Camera and Camcorder Battery for BP-511, BP-511A, BP-508 - Includes Lens Pouch : Camera Power Supplies : Electronics
2X BP-511 BP-511A Battery +Charger for CANON EOS 40D 50D 30D 300D 40D 10D BP -508 | eBay
Amazon.com: BP-511 BP-511A BP-508 BP-512 BP-522 BP-535 Battery Charger for Canon EOS 10D, EOS 20D, EOS 20Da, EOS 300D, EOS 30D, EOS 40D, EOS 50D, EOS 5D, EOS D30, EOS D60, EOS
Amazon.com : Kastar Li-ion Battery for Canon BP-508 BP-511 BP-511A BP-512 BP-514 and EOS-20D EOS-D30 EOS 30D EOS 40D EOS 50D EOS 300D EOS Kiss FV300 FV40 G-1 MV-300 MV-300i MV-30i MV-400i
File:BP-508-511-512-514-522-535 form factor.jpg - Wikipedia
Amazon.com : Kastar Li-ion Battery for Canon BP-508 BP-511 BP-511A BP-512 BP-514 and EOS-20D EOS-D30 EOS 30D EOS 40D EOS 50D EOS 300D EOS Kiss FV300 FV40 G-1 MV-300 MV-300i MV-30i MV-400i