I have a jetpack 8800 and it keeps over heating...like burn you hot. I have ruined original battery. Bought another one and it was ok for a while, bought another one and new one is doing the same thing. I have taken the back of it off to hope it cools off faster. I am having a hard time charging it now too because it get so hot. Now it powers off TOO HOT on the screen. I only ever have one bar on this jetpack too. I can use it most of the time but during busy times its about useless. I need it to work. This is the only internet I can have traveling in an RV and working.