Htc g1 turnig off - HTC Computers & Internet

It should be perfectly flat. A new, good battery does not have the bulging rectangle in the middle you are talking about. Mine did the same thing. In fact, both sides were swelling. The battery would no longer sit flush in the back. My theory was simply that some sort of movement was causing it to lose contact and shutting off the phone.

If you take the battery out and lay it flat the table, you shouldn't be able to rock it by pressing an edge. If you can, your battery is dying.Rooted T-Mobile G2/HTC Vision with OTA