Hmm thats interesting - he used it to charge his battery while using his
5th wheel - had it up on a big pole. After he passed, I looked for some
sort of controller, but never found one - I suspect he fried his battery
although my mother in law said they would use it for days while camping.
Ken
> > When you say short circuit, do I put the two leads together? Won't the
> > voltage be zero? I think when I measured voltage it was like 43
> > volts. The panel size is about 12x14 inches
> >
> >
> > Ken
>
>To get the short circuit current you short through an ammeter.
>
>43 volts looks like it was made for an 18 cell battery, 36 volts under
>load. Open circuit voltage for the more common 12 volt 6 cell system
>will be 16 to 18 volts. It will take rewiring (which may be very
>difficult) or a step down switching voltage regulator to make it useful.
>
>12 x 14 might be 30 to 40 watts.
>--