30W Solar Battery Charger Maintainer DC18V Portable Solar Panel Charging Kit with OBD Charger Red Black Battery Clip for Boat RV Trailer 1High Efficiency Charging: 30W solar battery charger is made of more effective monocrystalline silicon material, can collect sunlight from different angles, which absorbs solar radiation heat to a greater extent, greatly improves the charging efficiency and speed. 2Dual Output Ports: With 2 output interfaces, it enables simultaneous charging of multiple devices. Small in size and light to take, it is easy to carry for camping or other outdoor activities. 3OBD Charging: The OBD charging design allows for convenient charging anytime and anywhere for vehicle owners. The red and black battery clips are designed for safe and reliable current transmission. 4Strong and Durable: The solar car charger is high strength, impact resistant. And the sturdy ABS frame makes the solar panel more durable than others. Smooth surface, don't worry about scratching the vehicle. This solar battery charger needs no additional maintenance, extra long service life and durable. 5Easy to Install and Use: The outdoor solar battery maintainer is easy to install, and convenient to use, just connect the solar panel to the battery with the clips directly. The perfect charger maintainer for any car, motorcycle, boat, tractor, and more.