Tether Tools - Relay Camera coupler CRN5B-C, Compatible with Nikon Battery EN-EL15C
TT15357Relay Camera Couplers work in tandem with the Case Relay Camera Power System to keep your camera powered continually with an external 5V USB battery pack or wall power. The Relay Coupler is simply an insert for your camera battery cavity that enables powering the camera via Case Relay Camera Power System. The coupler does not contain a battery or hold a charge.
CLICK HERE for details, specs & description on manufacturers site.
Supplier SKU: CRN5B-C