Flashpoint Professional Camera Grip for the EOS Rebel XSi, T1i & Canon 450D, 1000 Digital SLR Cameras Vertical-Grip Main Dial Holds 2 LP-E5 Lithium-Ion Rechargeable Batteries Includes one AA battery adapter which allows you to use 6 AA size batteries Vertical Firing Release With Lock Vertical-Grip Shutter Release Button