Bower XPDNEL21 Digital Camera Battery for Nikon EN-EL21 1 V2 Mirrorless Digital Camera (Black) Rechargeable Li-ion replacement battery for the Nikon EN-EL21 7.2V and 1600 mAh 100% memory-free for full charge at any battery level Fully compatible with Nikon MH-28 original battery charger Designed for Nikon 1 V2 mirrorless digital cameras