D/C power source converter

[TerryWighs]

Any problems with using a A/C to D/C 12v converter for a power source to test lights/circuits, rather than battery? Whats the 14 volt concept all about?

[Brantel]

So you can fully charge the 12V battery. Trying to fully charge a 12V battery with 12V ain't gonna happen.

12V will work fine for testing.

[TerryWighs]

Thanks Brian, another excellent answer, from one of my many bone head questions.

[rapid_ascent]

The 14V reference comes from the alternator output voltage which as Brian said must be higher than the battery voltage to charge the battery.

Ray