I have purchased this battery in the past, and then tried generic batteries. The generics didn't hold a charge and were not worth even the smaller amount I paid. This battery is worth the money.

This came with my Rebel XT. Made in Japan, rated at 720mAH. I also bought a generic battery (SterlingTek - made in China) for back-up. Generic battery is rated to be 1700mA. Canon's probably last 100 shots more for comparison.

Pros:
- A full charge usually lasts around 500 shots. Auto focusing on all the time and with a 15% flash use.
- Amazingly small and light. It fits even in the smallest pocket of your camera bag.
- It is Canon for your Canon. You know there is no incompatibility issue. Perfect fit.
- Fast charging. 1 hour of charge will lasts you a full day of shooting.

Cons:
- Expensive compared to my back-up that costs almost 1/4 of the price. Both batteries still works.

Wonderful battery's, I have the Canon Rebel XTi with the Canon Battery Grip BG-E3, put it to the test the other day on a short trip, took over 750 pictures within a hours time with no problems at all. Very happy.

I purchased an off-brand battery for my Canon Rebel XT a few months ago from a local dealer. After using it for about 3 months, it would charge up in 10 minutes and wouldn't stay charged for more than 5 shots. I was furious.

My Canon NB-2LH Rechargeable Battery Pack, however, stays charged for 1000s of shots and takes less than 2 hours to fully charge. Although it is quite a bit more expensive than the one I bought previously, its reliability was worth the money.

The battery worked very well. It retained its charge for a very long time. I was able to take very many photos.