Ursprünglicher Beitrag von: arbaman ,
It sounds like you have a faulty charging circuit from your description and the basic troubleshooting, but unless we plug into your Mac a different known good battery there’s no way to tell, you might simply have a faulty battery that can extend its fault to the logic board when plugged in place. If you had a SMC issue it would probably give troubles even with battery unplugged but if I understand right without battery the Mac runs fine. SMC don’t go bad so often unless there’s water damage and from a technical point of you replacing it without testing makes no sense. There’s no Pram battery in your Pro model.