I'd have to agree with rambo on this one. I've always left my phone on the charger when on the computer for work, and also when I'm at home after hours. Not once have I ever experienced a battery issue with any of them. Even now with my bold 9650, I leave it on a charging mat (BlackBerry Bold 9650 accessories
) almost constantly because of it's ease of use. But enough of my life story; you should be fine.