A basic battery powered 15W LED worklight is tested for product photography. With over 3 hrs use on a charge, is the light quality good enough? The device doubles as a 6000mAh 22.2Wh USB powerbank...
Nikon have an updated product advisory for very specific versions of the EN-EL15 battery. cameras include D800, D800E, D810A, D810, D610, D600, D7200, D7100, D7000, D500 and the Nikon 1 V1...
Some information about spotting fake batteries and why it's often not worth the risk, just for saving a bit of money. Beware of cheap batteries, especially with on-line shopping. Buy from a reputable dealer...