yes it can
but you are not going to weld these battery strips with that
tiny amount of power
nothing wrong, with a regulated supply for the right purpose
but welding needs Amps, lots of amps , especially for momentary contact spot welding
that weld has got to be a 100amps or more in that circuit for that split second weld, the nickel strip is basically a short circuit across the battery when the solenoid close contacts
you can built a regulated supply spot welder
but i think it will be more efficient/expedient less costly, and more timely to use the battery method
now if you plan on going into business making specialty battery packs
building the regulated power spot welder might be a benefit
sometimes quick and thrifty is the best way to go
do you really need to build a 'project' just to experiment with another project ?
