18-Watt Folding Monocrystalline Solar Panel with 8-Amp Charge Controller 18-watt monocrystalline solar panel for charging laptops and 12v batteries Opens to lie flat: 27-inch x 15-inchw. folds to 6 -inchl x 7-inchw for easy storage. 1 amp output at 18vdc Safe for outdoor use Includes 12-feet wire, 8-amp charge controller, 10 laptop adapter plugs, battery clamps. 18-watt monocrystalline solar panel for charging laptops and 12v batteries Opens to lie flat: 27-inch x 15-inchw. folds to 6 -inchl x 7-inchw for easy storage. 1 amp output at 18vdc Safe for outdoor use Includes 12-feet wire, 8-amp charge controller, 10 laptop adapter plugs, battery clamps.