I just finished this repair successfully. Don't force ANYTHING Find something, a steel plate, aluminum plate, a heat gun and heat the plates not the iPad. Then it does not over heat, it is even and does not get cool. That makes it really easy. I used a piece of 6" of channel beam and blew the heat in the channel, measuring the top with a laser thermometer (140F target) after step #37, it worked so much better. I lifted the battery w/o touching electronics, and logic board too. It was easy with separators from IFixIT and slabs from a milk carton.

I don't think anything was risky this way and should have used the beam for the 1-37 steps.

Thanks to all who contribute here.

The black screw is for the battery. The metal cover is attached to the logic board, that is not clear in here. I skipped from #37 to #67 and removed the battery by sitting the housing on a metal beam heated to about 150F. As the iPad back warmed up, a few strips of a flat side from a milk carton (2-3" x 5") were made as long as the battery. The IFixit credit card size separators were used were there was room and not touching any electronics. Between the milk carton and IFixIt separators (stronger, stiffer, dont soften as much with heat) the batter was separate and left sitting on the carton strips to prevent reattachment. With battery still attached - - By this time the logic board was eager/easy to lift and the battery tab UNDER the logic board was lifted enough for the old battery tab to clear the case stud. New one installed immediately.

I just performed this repair on my late 2018 mac air. I did click the gold button but saw no LED illuminated or otherwise. Question- after reassembly does the button get pressed again to connect the battery? Please clarify if this button is to be pressed and if it needs pressing again after the repair.

All said - I pressed again after the battery connector clicked, assembled the back and all worked perfectly. The original issue was one dead port (no charge, no communication). The battery charge lightening bold icon was acting funny too. Genuis bar guy in Naperville said it was likely a logic board too. But it was not. The port was apparently confusing the logic board with regards to the charge function. Thanks Adam for saving me $440 and sending my computer back to Apple. I am 71 yrs young - who says an old dog can’t learn new tricks with good training!!