【Smart Solar Controller】This 12v Solar Battery Charger uses smart chip to track the power in the solar panel in real time to maximize the effectiveness of the solar panel. At least 20%-30% higher efficiency (theoretically 50% higher) compared to traditional controllers. 【Full Protection for Your Safety】Solar Charger for Boat Battery has 6 kinds of protection functions: With reverse charging protection, overcharge protection, overvoltage protection, overcurrent protection, short circuit protection, over temperature protection and other safety functions. Comprehensively protect the battery, increase the service life and make charging safer. 【Wide Range of Compatibility】The Solar Powered Battery Charger is suitable for most common 12V rechargeable batteries on the market, such as LiFePO₄, AGM, GEL and so on. It can charge and maintain 12V batteries in your trailers, tractors, trucks, bicycles, motorcycles and boats. 【Durable and Sturdy】Using 1.6mm iron tempered glass and corrosion-resistant aluminum frame, IP68 waterproof material makes the solar panel waterproof and rust-proof, which can withstand extreme weather such as wind, snow and rain. 【360°Adjustable Mount】The Solar Battery Maintainer Automotive comes with 360°adjustable bracket, which can be easily mounted on the wall, roof, boat. The four corners of the solar panel kit also have corner protectors, which can prevent the solar panel from being damaged in case of accidental fall. 【What You Get】 1 solar panel + 1 charger controller + 1 mounting bracket +1 alligator clips +1 O-rings + 1 set of mounting pieces. We provide one year after-sale service and lifetime technical support. 7×24 hours After-sales service ensures that your question is answered within one day. 【Callsun—Long-Termist】Callsun Solar Panel focuses on long term benefits, and adopts Grade A+ material, which can last for 25 years under the right use.Callsun Solar Panel will be with you for a long time, and we promise to provide you with technical support for our products and warm service around the clock, please feel free to contact us. Solar Panel Kit 15W 12V, Callsun Solar Car Battery Charger Maintainer, 360°Adjustable Mount Bracket Solar Trickle Charger for Boat Automotive Marine RV Dump Trailer Lawn mower