I have been charging my blackberry for just about 2 hours now. It is not gaining any power though. I was lost battery bars after sending 3 text messages and 1 phone call.
Based on the information that you provided there my be a problem with the charger port or battery.
Try these steps:
Try using another wall outlet.
Try removing the battery about 10 minutes and then putting it back in.
Make sure the battery is snuggly mounted in the device.
If the problems persist, I recommend taking the device and charger to a store location to have technician take a look at it.
Copy and paste the link below into your browser's address bar for the store locator.