Use the SmallRig EN-EL15 Dummy Battery to extend your Nikon DSLR’s battery life with an external battery or other DC power source.
The adapter plugs into the 2.1mm DC barrel output of your battery plate or other power source, and the EN-EL15 dummy battery plugs into your Nikon camera’s battery slot.
Your camera can then benefit from higher-capacity external batteries or power adapters that can supply 7.4 VDC to your device.
Cameras that utilize an EN-EL15 battery such as the Nikon D500, D600, D610, D750, D780, D800, D810, D850, D7000, D7100, D7200, D7500, Z 5, Z6, Z6II, Z7, and Z7II
Power supply with 7.4 VDC 2.1mm output port