Canon BP511A 1390mAh Lithium Ion Battery Pack for Select Digital Cameras and Camcorders

I purchased two of these Canon batteries because I own a Canon 85mm F/1.2 L II lens which really eats batteries alive and when shooting a wedding you don't have time to charge!

This seems like the exact same battery that shipped with my camera and seems to last just as long.

I recommend

This is what is needed to make the camera work as it should for a good amount of time. Has done the job well.

The Canon BP511A 1390mAh Lithium Ion Battery rocks. If you shoot with the grip, fabulous! If you just want one as a backup so that you can shoot longer, fabulous! In short, fabulous!

Don't waste your time with the fake batteries. I bought a Targus clone for my 20D and the battery died within a year. Targus support is ignoring me. I should have just stuck with Canon batteries from the very start.

This lasts for a longer time than I though possible on a Canon 30D, taking say 100 shots over a couple of hours per day it has lasted for about a week... I haven't really used the built-in flash but I do review every shot on the built in screen. It recharges in a couple of hours.

It's still a good idea to get a spare battery, just in case... I didn't feel comfortable buying a no-name battery for such a great camera; the bottom line is I did get over the initial sticker shock and this will prove to be good value for money if it continues like this in the medium and longer term.