Need a Battery charger

[YY1]

I have a 12v supply similar to this, but more substantial-

A computer power supply should have both 5 and 12v connections.

...and you might find one laying on the side of the road.

 

[ProjectBazza]

In my opinion you're looking for two separate pieces of equipment, as something intended to be used for starters, for example (high amps) would be completely overkill for lights, dash circuits, etc. And a 12 VDC power supply like the ones shown here (I have a couple of them as well, and they serve their purpose) sure as heck isn't going to spin-up a starter. Or at least not over and over and over again....