Problem with battery

[theartofruin]

I've been having problems lately with my Touch Pro. When I start the phone up the battery life icon looks like this: [ !] . When I go to power under Settings > System it says the battery life is "Unknown". When I plug in the charger it does nothing (same with PC USB). I've tried soft reset and hard resets. Sometimes when I boot the phone up with it plugged either via PC or the charger it works. As in it tells me the battery life and works when I plug it in. Sounds like a hardware problem but I'm not sure. Any ideas?