Hi All, I have the above mentioned 13" MBP which I repaired a few years back after a crush accident. The logic board was moved to a new shell and things worked great for a while. After a couple months in storage the laptop indicates the battery is not charging, despite being able to run off the wall socket. I have performed SMC resets, removed the battery, reinstalled the battery, reinstalled a different battery, installed a fully charged battery. In no scenario can I seem to bypass the problem, and the computer does not charge the internal battery. My issue is this. The computer doesn't perform properly when running on the magsafe charger alone. It has EXTREMELY choppy performance, is slow, and generally unusable despite powering on and attempting to function. When a battery with a charge is installed, performance chugs along normally. I am wondering if the processors are not getting enough juice and are throttling back or perhaps something else is to blame. Can anyone suggest further trouble shooting? I am capable of most repairs for the computer. My thought is the mag safe board must work, but the power delivery from that board to the battery clearly isn't taking place. Does anyone with technician's experience have a recommendation or technical guide that might help me to isolate the issue? I am about to do a clean OS install just for kicks but I feel strongly this is a hardware based issue. If at all possible I would like to salvage the machine since it is frustratingly close to being functional, but I am getting to the point where I am considering off loading it as scrap. I would love advice! Thank you!