I use Widgetsoid. I also go to battery details in the phone's settings and it reads the same. When it gets like that the phone is super hot to the touch at the bottom on the back, even through the case.
I use my overclocking utility to bring the processor speed down a bit when it gets too hot. However, I recall having heard that the phones give alerts when it gets unsafely hot, and can turn themselves off it that gets out of control. Don't accept that as trufax though; I could totally be wrong.