DSTE&reg; Pro IR Remote Vertical Battery Grip + 2x EN-EL9 for Nikon D40 D40X D60 D3000 D5000 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-lon batteries or six AA Battery for extended shooting Li-ion Battery Info: DC 8.4V (max); DC 7.2V (mean) 14.1Wh/1900mAh 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