Delete comment from: Ken Shirriff's blog
Wow ! Great work - was quite curious (and suspected they were using SWD); keep up the awesome posts !
PS: blocking the Sense Pin will make the mac not charge the battery - perfect for when you want to keep it at a storage charge level
Aug 30, 2017, 10:23:55 AM
Posted to Teardown and exploration of Apple's Magsafe connector

