Hahnel HL-EL15 7.0v 1650mAh - Nikon EN-EL15 Replacement Battery
The Hahnel HL-EL15 Battery (Nikon EN-EL15) is a spare or replacement battery, equivalent to the Nikon EL-EL15, for the Nikon D7000, D7100, D800/E, D600, D610, D750, D810 and Nikon 1 V1.