crwdns2893792:0crwdne2893792:0 Brian Wood ,
Excuse the fact that my answer may already be listed here, I didnt read all the answers, but watching a few episodes of iPad Rehab on Youtube and the tri star going bad seems to cause a lot of funky power issues. I have two iPhone 5's that had similar issues before going completely out. I swapped batteries and charge ports multiple times. I would assume it's the tri star chip, however I have no micro soldering experience.