Plugging the cord into the tower instead of the usb hub after restarting seemed to get it charging again, and after a couple of hours it was charged to around 50%. I'll try again today at work and see if it continues charging. I suppose it makes sense that these batteries eventually die, and I have used to unit fairly regularly since I got it... It just seems to be getting more and more finicky about charging coupled with not holding a charge as long...
