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 and easy to carry. High conversion rate and high energy output. Offers high stability and durability with strong applicability. Features pre-drilled holes on the back for easy mounting and secure installation. Charge controller: Includes a 10A-60A 12V solar charge controller with smart multi-function capabilities and an advanced LCD display. Real-time monitoring of battery voltage and current, with continuous tracking of charging efficiency. Durable aluminum frame: Designed with a sturdy aluminum frame and non-reflective tempered glass, suitable for various weather conditions. The waterproof junction box on the back enhances safety and protects against moisture.