The Olympus E-5 BLM-5 battery is an effective replacement battery for the original BLM-5 battery that comes with the Olympus E-5 digital SLR cameras.These 7.4V replacement lithium-ion batteries cameras are compact and easy to carryThis rechargeable battery has a power capacity of 1620 mAh, with which hundreds of photos can be snapped before it has to be recharged againThis battery does not feature any memory effect, hence partially drained batteries can be recharged without compromising on the performance with the Olympus BCM-5 battery charger