Canon LP-E6 Battery Pack for Select Canon Digital SLR Cameras
[013803104400]

Great Battery.. keeps a good long charge when shooting pictures or video. I'm a wedding videographer and we recently switched from Shooting from Canon's A1's to shooting all 5D Video. Might sound crazy but its awesome! I can usually shoot video all day with only two of these battery's with no need to recharge. Every once in a while I'll need to use the recharged one, but usually I'm good with just two cycles.