Clearmax® 2 Pack of High Capacity Batteries For Nikon EN-EL15 and Nikon 1 V1, D600, D800, D800E, D7000 (FULLY DECODED!)
Features lithium technology, & Integrated microchips that prevents overcharging & lengthens battery life which will ensure maximum battery life and maximum power. It also features no memory effect that lets you recharge partially drained batteries without reducing performance.