Stay powered up with 12 V Solar Trickle Charger. It will help you avoid getting stuck with uncharged batteries. The amorphous solar panel is weatherproof and charges in all weather conditions, including cloudy days. This Solar Trickle Charger is easy to use and requires minimal installation. It includes 9 feet of cable, a 12V DC plug, battery clamps and mounting hardware. This Solar Trickle charger is ideal for cars, Rvs, boats, trailer, electric fences and much more.