A few years ago I bought my first digital camera. I loved it but it needs a lot of juice. So, I got turned onto high capacity rechargables.
Those first batteries are coming to the end of their lifespan so I got some new ones. The technology continues to move ahead and now they have some batteries that lose less of their charge when they're just sitting around...that's been a major bummer of the older ones.
Here's a great source. Thomas Distributing
*** UPDATE ****
First one got swiped from a bag while travelling to Florida. Another one on it's way.