Easier than I thought!
After 6 strenuous years, the factory battery was failing and swelling.
Repair went off without a hitch, and the battery was easier to remove than advertised. Maybe it was just my situation, but with the adhesive remover the battery popped off easily.
Keep your screws organized! Also, be very careful when placing the motherboard back in - count the cables you pulled when removing and make sure they are all above it during reassembly!