2012 MBP Retina 15" Battery Replacement

Mijn probleem

The system shows the battery is having a problem

Mijn oplossing

went well. Remember to drain your battery first just for better safety.

Mijn advies

you can follow the advice from here: https://www.youtube.com/watch?v=ruG2Nh-r..., i.e. use a string to "cut out" the battery from the container.

It worked pretty well and so you don't have to take everything apart because you don't need to use the adhesive liquid remover a lot.