Just to add to the confidence of others. I, too, did the repair without all this disassembly. Once the cover is off the back, take the two screws out of the trackpad logic board connection (step 26). then unplug that ribbon cable and pull away from the battery. You can remove the other end of this, but you don’t need to just fold it back. There are two more torx screws holding the battery in, remove them (step 50) then unplug the battery connection. That’s it, then pried up one battery one the end and got some nylon string under it (dental floss didn’t work, broke) and saw back and forth. Once the end section of battery is loose, I used a combination of string and the plastic cards to saw back and forth to cut the double sided tape. Took me 30 minutes. Don’t get me wrong, the ifixit plan is solid and the kit is great but if you can avoid steps, it’s better. less to go wrong in re assembly.