Originally Posted by Doghouse

To have a panel that maintains your batteries does not have to be very big,..maybe like this one

http://www.talcoelectronics.com/p-68...y-charger.aspx

It comes with its own charge controller, and will keep your truck batteries fresh.

but for recharging batteries that crank slowly from use while truck engine was not running,......you'll need a set of these bad boys

[img]http://i155.photobucket.com/albums/s...olarpanels.jpg

These will bring my batteries from 10.5 volts to 12.8 in about 45 minutes.
There are 390 watts of power being generated, and they run through a hi voltage charge controller, the spark these throw is clean and blue, and they actually have too muck electrical flow for a 50amp fuse, the fuse get too hot to touch.[/img]