This is a perfectly good battery for the Canon 10D. It is rated at 1400maH, while the original Canon battery is only 1100maH. This should mean that it's longer lasting. I bought another battery elsewhere that is rated at 2000maH which theoretically should be even better. Only detailed testing could really verify these ratings, but that's not a project that I am going to do anytime soon. The battery looks and works just like the original, and I have no complaints at all. The price was reasonable [$] compared to what the camera store wanted [$] but there are other cheaper batteries out there. I'll be in a much better position to rate this product after I use it for a couple of years, but that isn't going to help anyone right now. It's a perfectly good battery that works as it should in my Canon 10D.
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