Go Energy! 20-Watt Solar Charger is a excessive efficiency polycrystalline panel takes the suns rays and creates DC power to cost the batteries. It offers 1.2 Amp of cost per hour. This charger has a four.5 Amps sunlight regulator within the equipment in addition to all mounting hardware and wiring. It’s great for maintaining the batteries topped up within the RV, boat or car throughout storage as well as includes all directions.