STK's Canon-5d-Battery High Capacity 2600mAH - for Canon 5D Mark III and Canon 5D Mark II STK's Canon 5D Mark III & Mark II Battery (POWWER Series) 100% OEM Compatible -- Meets or even Exceeds OEM Canon LP-E6 Battery technical specs Proven to work with your Canon Canon 5D Mark III & Mark II camera CE Safety Certified Canon LP-E6 Battery is 100% warranted for twelve months from the date it is purchased.