I had to play the lovely refurbish roulette warranty game with my Razr, and the one we just got seemed to have an already weak battery. Well it now randomly shows the charge dropping to zero instantly if not plugged in, regardless of charge level, and gets almost too hot to touch. Obviously this one is now going back, but what are the dangers with using the current one while waiting for the next chance phone? I know it isn't good to use it, but don't have much choice and haven't dealt with this before.