The BG-E6 Battery Grip for the Canon 5D camera holds 6 AA batteries or two LP-E6 li-ion batteries, doubling the battery capacity of your camera. Vertical shutter release button on the Battery Grip makes shooting with the camera in a vertical position much easier, adding stability to the camera. Beware that the batteries should be put into the magazine before inserting the magazine into the grip!

In this professional edition, it comes with several functional buttons such as additional shutter release, main dial, AE lock and AF point selection controls for easier vertical shooting.
This model Has the same function as Canon BG-E6!

About the LP-E6 battery , Kindly Note

This is a new type Decoded Li-ion Battery for Canon EOS 60D,7D, 5D Mark II. Full compatible with original LP-E6 battery! It can display power consumption on the camera and also can be recharged on Canon original charger!

Fully compatible with original Canon LP-E6 battery and LC-E6 charger.
Shows battery power information on camera,
Rechargeable Lithium-Ion battery pack, NO memory effect so that you can charge battery at anytime
Integrated microchip prevents overcharging, overheat & provide short circuit protection.

Specification:
Compatible with: Canon EOS 5D MARK II BG-E6
Dimension(WxHxD): 149 x 76 x 114mm
Color: Black

Package included;
Pro Battery Grip for Canon 5D Mark II x1
Battery Holder for 6 AA batteries x1
Battery Holder for LP-E6 batteries x1
User Manual x1
Original Manufactory Package