The BG-E13 Battery, Grip for canon EOS 6D from canon is a Battery, grip
designed for use specifically with the canon EOS 6D digital SLR camera and
accepts one or two canon LP-E6 batteries. With two batteries installed, your
shooting time is effectively doubled. Moreover, when one Battery, is drained, it
can be removed and recharged while you continue shooting with the other
Battery,. In addition, the BG-E13 can utilize 6 AA batteries and comes with a
Battery, tray designed to hold 6 AA/LR6 batteries. It can also be powered by the
optional ACK-E6 AC Adapter Kit. The curved design of a Battery, grip offers a
comfortable and secure way in which to hold your DSLR, especially in the
vertical position. And the BG-E13 comes with an alternate shutter release
button, AF start button, AF point selection button, AE lock/FE lock button,
multi-controller, multi-function button and main dial to facilitate shooting
when held vertically. The BG-E13 is designed with anti-slip rubber grip to
further improve handling, a tripod socket to mount your camera directly to a
tripod and a wonderful touch: a holder for the camera's Battery, door so as not
to lose it when the Battery, grip is installed.