The 7D is a battery grip for the CANON EOS 7D DSLR camera, which can hold two battery packs LP-E6 or six size-AA batteries.
It is equipped with a vertical-grip shutter button, command dial, AE lock/FE lock, and AF point selector button to enable shooting in the same fashion as a horizontal grip.
Major Specifications
Type: 7D Pro
Power Source: (1) one or two LP-E6 battery packs
(2) 6 pieces AA-size batteries
(3)AC Adapter Kit ACK-E6
Dimensions: 147.4x114.3x76.9mm
Weight: approx. 340g (not including battery packs and battery chambers)