I don't think it is the battery. I think my jump start worked. I think the problem is the same as I was having in my V2s and that is wire shorts due to the way our feet move when we walk causing stress on the joins.
Sorry for the blur in the photos. Camera just would not focus this close.
Step 1, remove the yellow plastic.
Step 2, add copper tape to the terminals.
Step3, apply insulation of the terminals.
I have not folded these back down. The battery still fits in the recess in the sole.
The isse is that if the wires move, particularly on the EL panel side, there is a short or disconnection and the lights go out.
Step 4, reinstall the battery in the shoe.
So I bet these fail again as soon as I put them on. To fix this problem is a complete rewire of the shoe. It would be just easier to use the other pair and display these.