BlueTech Vertical Multi-Power Battery Grip Power Pack for Nikon D5100, D5200 D5300 Digital SLR Camera Effectively double your shooting time Accepts One or Two EN-EL14 Batteries Comes with an alternate shutter release button to facilitate shooting when held vertically. Photographers can concentrate on shooting at their ease without worrying about battery life. The included shutter release cable connects from the socket on the battery grip to the remote release port on the camera body and transmits the shutter release signal from battery grip to the camera.