The 30w-12v Boat Lift Solar Charging Kit is constructed to last using only the best materials to withstand harsh marine environments and  UV radiation. The easily-adjustable anodized aluminum mounting arm resists corrosion and has the strength to withstand high winds and storms. Furthermore, Lake Lite's manufactures the highest quality solar panels available and are rated for 20+years life! With an emphasis on CELL quality, reliability, and longevity, Lake Lite's 30w-12v Boat Lift Solar Charging Kit meets the highest customer standards. Our panels feature monocrystalline cells, a superior solar technology when it comes to efficiency. Superb low lighting performance, these single-crystal, silicon cell panels have a long lifespan, high durability, high reliability. These modules are sealed with low iron tempered glass and anodized aluminum alloy frames.