Canon Battery Grip BG-E6 (Discontinued by Manufacturer) Canon Branded Retail Package With two packs, the already-impressive battery life is doubled, compared to using a single LP-E6 pack in-camera. Especially for extended use of the EOS 5D Mark IIs movie mode or Live View, the BG-E6 is an outstanding accessory. Many users find the battery grip can enhance camera handling, especially for shooting vertical pictures.