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Used Canon BP-511A Lithium-Ion Battery (7.4v 1390mAh) 9200A001
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Powerextra 2-Pack 7.4V BP-511 BP-511A Batteries + Battery Charger for Canon EOS 5D 10D 20D 30D 50D 300D D30 D60 Rebel PowerShot G1 G2 G3 Pro 1 Pro 90 Digital Camera - Walmart.com
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Amazon.com : UltraPro Canon BP-511/BP-511a/BP-512 High-Capacity Replacement Batteries with Rapid Travel Charger for Canon Digital Cameras : Digital Camera Accessory Kits : Electronics