This is a solution that a customer provided regarding batteries that do not seem to take a charge.
The key points are:
a) resetting your camera by removing battery for at least 60 seconds;
b) after reset, put battery back in -- and this is important -- charge via your laptop or PC USB (and make sure the computer doesn't go to sleep during the entire process); and
c) wait 30-60 minutes for charging to kick in. (See the fine print toward the end of the article, which is really easy to miss: "Charging your video camera when the battery is extremely low on power activates the Trickle Charge feature. It may take 30-60 minutes before you could see any indication that the battery is charging.").