6. Pull the plastic frames away from the left and right sides of the center batteries.
7. Repeat steps 4 and 5 for the two center batteries.
8. Jump to step 55, then reassemble.
Note: when installing the new battery, ensure the part closest to you is UNDER the two plastic tabs.
Link to video: https://www.youtube.com/watch?v=fupkPz55...
Note: using the nylon thread with that much effort is crazy. Use the wire or fishing line.
I too found the need to completely teardown the laptop onerous and risky. I’m not certified in anything hardware but I’ve been doing my own repairs for a while. I watched the video referenced above and read the comments there. With some changes, here is what I did, which worked perfectly and minimized the risk, for a whole additional $3 in parts, just myself and in under an hour:
1. Go to hardware store and get 2 4” bolts ($1 each) and a coil of 20 gauage galvanized wire.
2. Wrap one end of the wire a few times around one bolt, then tie it off with a knot. Do the same with the other bolt, leaving about 10” of wire between the two.
3. Follow steps 1-4 in this guide
4. Slip the wire under one of the outer batteries (use a card or spudger to help get the wire underneath
5. Grip both bolts with one hand and rock them back and forth, pulling the wire under the battery, using your other hand to hold the case. This should take about 2 seconds (seriously). Repeat for other outer batteries