The Battery Grip BG-E16 for the EOS 7D Mark II holds two LP-E6N battery packs, or six AA batteries, or the optional AC Adapter Kit ACK-E6 for extended shooting time. It features a variety of controls such as a shutter button, main dial, multi-controller, AF point selection button, AE/FE lock button, AF start button, and multifunction button making it ideal for vertical shooting.