You can register up to six Battery Pack LP-E6's to the camera. To register multiple battery packs to the camera, do the procedure below for each battery pack.
- Battery registration is not possible if size-AA/LR6 batteries are in the Battery Grip BG-E6 or if you use the AC Adapter Kit ACK-E6.
- If six battery packs have already been registered, [Register] cannot be selected.