[Al Skierkiewicz]

Danny,
Something that doesn't come up in these discussions that should be. When you charge a warm battery, it sometimes fools the charger. To make sure you get max charge, let the battery cool down after you take it off the robot for 30 minutes or more. Also, lots of traction/friction with the floor will eat batteries in turns. If you are doing a lot of turning, this will also affect battery life.