For photographers who need enough battery power for a really long photo shoot, there is the new, ergonomically shaped Battery grip BG-E14, which doubles the battery performance of the EOS 70D with two LP-E6 batteries. In an emergency, conventional mignon cells can also be used. For those who shoot more often in portrait orientation, such as sports or portrait photographers, the battery grip has additional dual controls for AF start, AF points and exposure lock, as well as a second multi-controller and a second main dial.