Newmowa EN-EL18 Rechargeable Li-ion Battery for Nikon EN-EL18 and D4 Digital SLR 1 Rechargeable Li-ion polymer battery for Nikon EN-EL18 (Charger is not included) Rated at 10.8V and 3000mAh for a longer run time than the original Li-ion Polymer cells for longer battery life with no memory effect Fully compatible with the Nikon camera All items include a 2-year manufacturer warranty