On 3/25/2010 6:49 PM Existential Angst spake thus:

"David Nebenzahl" wrote in message
.com...

On 3/25/2010 5:00 PM hr(bob) spake thus:

Set the voltage at 14.0 +/- 0.25V and you should be fine. Like you
indicated, just keep the polarities correct.

Sounds like way overkill on the precision (and voltage) to me. Someone
else here said to just use a 9-volt battery plugged into the cigarette
lighter socket (does this car even have one of those???). 9 volts might be
a mite low, but I'd say just use a 12-volt supply and be done with it.
Remember, you're not charging the battery, only powering the radio's
NOVRAM stay-alive power.

Keep in mind that when you start a car, the voltage can dip to 8-10 V under
heavy load.
So a 9V battery proly could do the job, as long as there wasn't much current
drain on it.

I think lantern batteries are 6V (basically 4 D cells), so two of those in
series would work as well.
Mebbe even the battery packs from 12V drills, etc.

Any of the above will work. You certainly don't need 14.0 +/- 0.25V.


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