Battery Doctor’s® 5 Watt Solar Panel Trickle Charger – Maintainer Kit allows you to charge and maintain your RV, boat or cabin batteries using sustainable energy from the sun. This off-grid kit contains what you’ll need to have power where and when you need it. WirthCo’s Solar Charging Kit includes a 5 Watt solar panel, a male output adapter (cigarette lighter adapter), alligator clips, connectors and mounting hardware. A great trickle charger at up to 420 mA of power for your motorcycle, ATV/UTV, Boat, Jet Ski, Electric Fence, Car and more!