I recently changed my mother in laws battery on her 2015 MacBook Pro. I followed the directions as instructed and all was going well. [br]
Followed the battery calibration steps as well. [br]
After this she used the laptop for a short while and the screen went black. I diagnosed and searched online for hours and so far I’ve done the following:
reset the SMC 4 times
did a traditional reboot
unplugged the battery 3 times and tried that and still didn’t work. [br]
also tried and re followed the entire build process again, went and made sure that the mag connector was good inside, all the cables connected, etc… all was good. I put everything back together again and I’m currently in the stage of trying out the battery calibration again but I wanted to know if there is any other solution? [br]
would it be a faulty battery somehow that I got sent? Even though it was working for a little bit. [br]
also the battery icon will not display and it says under the system info that there is apparently no battery connected and it won’t charge. (This was before I took it apart again and put it back together).