Excellent performance: The 300W solar panel kit uses 21% high-efficiency monocrystalline silicon solar cells, providing reliable performance even in low light conditions. Convenient and portable: Lightweight design for easy transport. High conversion rate and high energy output. Offers high stability and durability with strong environmental adaptability. Features pre-drilled holes on the back of the panel for quick mounting and secure installation. Charge controller: Includes a 10A-60A 12V solar charge controller with smart multi-function capabilities and an advanced LCD display. Monitors and displays battery voltage and current in real time, while continuously tracking charging efficiency. Durable aluminum frame: Constructed with a robust aluminum frame and non-reflective tempered glass, designed to withstand various weather conditions. The waterproof junction box on the back enhances safety and protects against moisture ingress.