From Slickdeals: RitzCamera via eBay is selling the EN-EL15 battery for $34.99 with free shipping - this is $12 less than Amazon, B&H, etc. Battery works with the D600, D610, D7000, D7100, D7200, D750, D800, D800E, D810, D810A and Nikon 1 V1 bodies.