Mr.Batt 1220mAh Replacement Battery for Olympus BLN-1 (Pack of 2) Battery type: Rechargeable Li-ion, voltage: 7.6V, capacity: 1220mAh, power: 9.3Wh Replace Olympus BLN-1 battery, and compatible with Olympus OM-D E-M1, E-M5, E-M5 Mark II, PEN-F, E-P5, E-PL5 Same power as the original ones, 100% true capacity CE certified and tested by manufacturer to match OEM products 30 days money back guaranty and 1 year limited warranty