Great guide and easy repair! My MacBook Air thought it was perpetually plugged in and would only charge from one of the USB C ports, this repair fixed it! I had a little scare when rebooting after the the fix, I either wasn’t pressing the power/touch ID button long enough or resetting the SMC (left shift, control, option, and power buttons) and holding the buttons until it booted worked. Not sure which did it.

My battery swelled up and made this a bunch easier to do. I used the pick (see second picture in step 14) in this orientation to drop a bit of alcohol down under the battery to help with the adhesive. That worked a treat! Battery is in and it’s on the charger now, waiting to see if force touch works when it boots up.