Aputure Battery Grip 5DMIIL - Handbuch (Seite 14)

Attaching to Camera
1.Remove the battery from the camera
3.Insert the detached cover into its storage slot to ensure that it will
not be lost
2.Detach the camera’s battery compartment cover
4.Remove the protective cover,and then insert the electrical contacts
into the battery compartment
Align the attachment screw with the camera’s tripod socket,and then
turn the attach/detach knob to tighten securely to the camera