"Bob" wrote

I wanna know if I can hot wire my scooter battery to a regular
12v/60w soldering iron to do local soldering repairs

Yes. You should have stopped right there........

without going to the
other fuel/chemical bonding methods for safety ????

.......as the rest of your post pretty much makes no sense.

Also, for about $5 from Harbor Freight or JC Whitney or similar you can get
a pencil size butane torch.