Progo Professional EN-EL15 Rechargeable Li-Ion Battery for Nikon EN-EL15 and Nikon 1 (One) V1, D600, D800, D800E, D7000 D7100 DSLR Cameras, Fully Compatible! Use Same as OEM. 2 Pack. Progo Brand Battery 2 pack, 100% Compatible with original manufacturer equipments, guaranteed! Integrated microchip prevents overcharging, overheat & provide short circuit protection. High quality Li-Ion battery cell. 7.0v, 2200 mAh Capacity Absolutely no memory effect so that you can charge battery at anytime 12 months manufacturer warranty