20 Watt Rigid Solar Panel Nearly Unbreakable Solar Unlike permanent solar options installed on boats, DURAlite Solar Chargers can be put out in the sun to charge a battery and then stored for later use. DURAlite 20 watt solar modules are made from a laminate of fiberglass and sunlight-resistant polyester film and are virtually unbreakable. These rugged solar solution are great for items like laptops, video cameras, cell phones, and VHF radios. Go Power! DURAlite Blue Series are easy to mount to any flat surface, with grommets in each corner. Complete with built-in blocking diode and 10 foot UV-rated cable with a 12 volt automobile-style socket plug. This solar panel needs a charge controller to keep from overcharging your battery! GPDL20 20 Watts 1.2 A 15 Volts 19.6 VOC 62.2 x 50.8 cm 24.5" x 20" Easy to add to most marine or rv based applications.