The canon bg-e14 battery grip is the official canon battery-grip for the canon eos 70d digital slr and offers the user multiple power options plus vertical control. the bg-e14 will hold up to 2 canon lp-e6 batteries to offer a greater shooting duration. as an alternative the bg-e14 grip can be used with 6 aa batteries. this not only increases shooting times but also means that the universally available aa batteries can be used in the event that your lithium ion batteries fail. the canon bg-e14 grip also makes holding your 70d in the vertical or portrait position more comfortable. shutter release, main dial, af point selection, af/fe lock, index, aperture, exposure compensation button and reduce button functions are all replicated on the grip, making operation of the camera more convenient when shooting in the portrait format.