Hello, I use macbook pro 2012 md103. When I want to replace the battery I accidentally damaged my logic board. I only damage a small part of the logic board, it only makes a little mark on the logic board, but it causes my macbook to take a long time to charge. From 0 to 100% it's took 15hours.
If there are other models, you have the guide to activate Intel. I am very grateful to you.