I skipped steps 8,9,11-17, and 21.

Step 19> when un-soldering the old battery wires, make sure to leave solder on the pads and in the holes.

I replaced steps 22-24 with Step 22-24> Very carefully and precisely:

-Place the black lead onto the pad nearest the hold switch (shown in red) with the end of wire pointing away from the battery.

-Place the red lead onto the center pad with the end of wire pointing away from the battery.

-Place the white lead onto the pad furthest from the hold switch with the end of wire pointing away from the battery.

Gently hold each wire in place on the pad while applying the soldering iron taking care not to touch the wire to any other pad or trace (note black wire). When the wire sinks into the solder, remove heat. Hold wire until solder has set.

Do step 25 and charge battery. Much simpler and less risk.