I purchased one of these batteries a month ago and could not more satisfied. My original Canon battery after 3 years no longer holds a charge and I spent hours trying to find a replacement from both online and retail stores for what I thought was a reasonable price with no luck. Then I happen to see this pop up on a web search and figured for the $$ why not try it. I have now taken over 300 pictures and several minutes of video and the battery is still going strong! What an incredible difference. I'm buying a second one for my Canon SD450 - it's officially been given a second life thanks to this battery!