Canon LP-E6, 1800 mAh, Lithium-Ion (Li-Ion) Canon LP-E6. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 1800 mAh, Purpose: Camera https://www.the-digital-picture.com/Reviews/Canon-LP-E6-Battery-Review.aspx The Canon LP-E6 Battery is the power source for the Canon EOS 5D Mark II DSLR and the Canon EOS 7D DSLR. These batteries were impossible to get for many months after the 5D II hit the streets. And if you found one on the shelf, the price was hard to s...