Canon Battery Grip #BG-E6
The Canon BG-E6 Battery Grip accommodates two LP-E6 battery packs, or six AA/LR-6 batteries (using the BGM-E6 Battery Magazine), for extended shooting time without re-charging. The BG-E6 also incorporates a vertical shutter release and other camera controls for easier composition in portrait orientation.
Compatible with the following Canon Digital
EOS-5D Mk II