3.7V Li 40B Li 42B Li 40B 42B Li40B Rechargeable Camera Battery for Olympus Li 42B Pentax D Li63 Fuji NP 45 Nikon EN EL10|Replacement Batteries| - AliExpress
100 % Genuine Olympus Li 42B Li-42B Rechargeable Battery 3.7V 740mAh New 5094257026420 | eBay
OLYMPUS LI-42B Rechargeable Battery - Newegg.com
Battery Pack for Olympus Li 40B, Li40B, Li 42B, Li42B Lithium ion Rechargeable|Digital Batteries| - AliExpress