Opteka Battery Pack Grip for Nikon D80 & D90 Digital SLR with 2 EN-EL3e Batteries (4000 mAh Total) Holds 4 AA Batteries or 2 EL-EL3 batteries Vertical shutter release also makes shooting with the camera in a vertical position just as comfortable as shooting horizontally, Buttons for AE lock, AF point selector, aperture value, shutter, and mail dial About 5000 shots when using 2 EL-EL3 batteries Increases functionality and convenience, 1 Year warranty 2 EN-EL3E Ultra high power True 2000mAh Lithium Ion 7.2v Memory free batteries for maximum performance, Extended shots - Up to 25% more then original, Brand new, 2 Year performance warranty