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4pcs Li 40B Li 42B LI 40B 42B Batteries + LCD USB Charger for Olympus Li 42B for Pentax D Li63 for Fuji NP 45 for Nikon EN EL10|Digital Batteries| - AliExpress
2Pcs 3.7V 1800mAh Li 40B Li40B Li 40B Li 42B EN EL10 Digital Replacement Batteries for Camera for Olympus for Nikon for Fujifilm|Digital Batteries| - AliExpress
Amazon.com : Olympus LI-42B Rechargeable Battery (Silver) : Digital Camera Batteries : Electronics