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Amazon.com: 2x Pack - Olympus E-520 Battery - Replacement for Olympus BLM5, BLM-01 Digital Camera Battery (1620mAh, 7.4V, Lithium-Ion) - Compatible with Olympus E-300, E-510, E-330, E-520, C-7070, E-1, C-5060, E-30, C-8080,
Olympus E-510: Digital Photography Review
Amazon.com : Olympus Evolt E520 10MP Digital SLR Camera with 14-42mm f/3.5-5.6 and 40-150mm f/4.0-5.6 ED Zuiko Lenses : Electronics