There were no wires to be careful with...the top just came completely off.
I clipped the black and white wires connecting the battery as close to the battery as I could to leave as much wire to work with as possible.
I cut the connector off the end of the new battery's wires, stripped the black and white wires at the ends, twisted the wires together, and soldered them. I just left the white wire alone.
After wrapping the exposed wires with electrical tape, I put the battery into the watch and pushed the wires out of the way of the button on the left.
I glued it back together with epoxy since that's what I had on hand. I hope I don't have to open it again! I pressed on the watch to keep it snug while the epoxy hardened. The connectors won't make good contact unless the pieces are snugly together.
When I plugged it into the charger, it started charging normally. An hour or two later it said battery charging was complete.
It got satellite reception and appeared to be working properly.
I went to the menu to see the battery symbol which indicated it is fully charged.
And Kim tried it out on her run this morning. It's working well!






