I ended up finding a solution on a few forums. When the error massage (battery not detected) is showing in the desktop icon on tast bar, unplug the charger (tablet will shut off) hold down power button about 10 seconds and while still holding it plug the charger back in. When the surface logo appears let go of power button. That will then give you the "plugged in, not charging" message. Repeat the steps and it will eventually work. After it was at 45% i unplugged it and plugged it back in. It worked and was charging well but after unplugging and plugging back in several times i noticed sometimes it would not charge. It is just a matter of plugging in and unplugging the charger in my experience. Ive heard many other people having the same problem and getting around it doing the steps i suggested.