Answer to: My battery wont charge, a new battery and different charger didnt helpAfter purchasing new battery and logic board, and still no luck, I tried one more thing. I have a MBP 13 inch mid 2009. I unplugged the battery meter board cable. This is right next to the larger block style battery plug. As soon as I disconnected, the black x disappeared and my battery started to charge. I have since replaced that cable with a new one, and everything is back working the way it should. If I went into settings, it wasn't even seeing a battery, never mind not charging it. I hope this works for you.