Good value
Considering the cost of factory batteries these are a very good deal.
so far they work fine. Only had them for a month or so.

One of the best batteries I have bought
I purchased this battery at the same time as a Canon Xti. After charging it once I have been using it to take about 500 photos (2GB CF card) many with flash and still have not had to recharge this battery. It has been 3 months and I finally changed the battery because I was going on a trip. Great Product..........

Same Battery
Exact same battery they were selling for 60+ in Circuit City. Been using it for sometime now and I've yet to need to recharge it. Best purchase I've made in a while!

Lifespan shorter than Canon's
I bought this battery at the same time I bought my Canon Powershot S30. I've owned it for almost two years now and have used both the Canon battery that came with the camera and this Digipower battery almost exactly the same amount of times.

About a year ago, I noticed the camera would blink the "low battery" icon much earlier when I was using the Digipower battery. It still worked but didn't last as long. Now it barely lasts ten minutes of "On" time. They say Li-Ion batteries do not build up memory or whatever, but the fact remains my Digipower lasts ten minutes while the Canon battery still lasts almost two hours.

I gave it two stars because of the price; you get what you pay for. This Digipower battery is not a "replacement" but a "cheap alternative" that dies after a couple of years of use.