BlueTech Vertical Multi-Power Battery Grip Power Pack for Canon EOS 7D Mark II Digital SLR Camera (Canon BG-E16, Replacement) Effectively double your shooting time Comfort and Control in Vertical Position: Vertical Position Shutter Release Button Supports two types of batteries (Two LP-E6 / LP-E6N Batteries Battery and six R6/AA-size alkaline, Ni-MH or lithium batteries) Photographers can concentrate on shooting at their ease without worrying about battery life.