25% more power over the 2007 Sunsei range using German Schott technology. Perfect match for medium-sized boats, RVs, trucks and tractors. Protects against natural battery discharge and electronic drain so no more worries about empty batteries. Can also be used to charge portable electronics, deer feeders, gate openers, fence chargers. Easy to use with a PlugÆnÆPlay for quick connections, including quick connect to attach multiple panels together. A push button touch action indicator lets you know that the panel is working. Engineered to maintain and increase the life of your battery it comes with multiple wire adaptors to attach the charger to different connectors. And because itÆs a Sunsei, the SE-500 has many uses. ItÆs perfect for charging portable electronics like laptops and cell phones, not to mention gate openers, fence chargers and deer feeders. Sunsei, delivering clean green power to enhance living. 10 year power warranty.