DSTE Pro IR Remote BG-E6 Vertical Battery Grip + 2x LP-E6 LP-E6N for Canon EOS 5D Mark II 5D2 SLR Digital Camera A firm, comfortable grip for vertical-position shooting with the Camera. Buttons and controls are conveniently placed and easy to reach for greater comfort. Holds two Li-ion batteries or six AA Battery for extended shooting Li-ion Battery Info: DC 8.4V (max); DC 7.2V (mean) 19.2Wh/2600mAh When using two batteries, the grip will automatically switch to the second battery if the first becomes depleted. Switching does not interrupt camera operation. Built in Infrared remote control function and remaining power indicator