The Watson BLN-1 Lithium-Ion Battery Pack works with the same cameras as the Olympus BLN-1. This replacement battery pack features a capacity of 1150mAh, 7.2V of output power, and 8.28 watt-hours. Small and lightweight, lithium-ion batteries can be charged or discharged at any time without developing memory effect.
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I haven't used my EM-5 in over 4 years. Thanks to BH, I can now power it properly for a reasonable price. The feature set of the EM-5 (electronic viewfinder, mirrorless, small size, great controls) make it competitive with current cameras.
Functional replacement battery for Olympus BLN-1. I only have 4 or 5 charge cycles on this battery. It does charge on the Olympus charger that came with my EM5 mkii, however it seems to take forever to charge in comparison to the original batteries. It also doesn't power the camera for as long as my other two 7 year old Olympus batteries. I'm not sure if this is because it's not fully compatible with my charger or not? It does work as a backup but doesn't seem quite as good as the Olympus original battery.