The Watson LI-80B / NP-900 Lithium-Ion Battery Pack works with the same cameras as the Olympus LI-80B and Minolta NP-900. This replacement battery pack features a capacity of 650mAh, 3.7V of output power and 2.4 watt-hours. Small and lightweight, lithium-ion batteries can be charged or discharged at any time without developing memory effect.