Monocrystalline silicon solar panel with PET bottom layer, no glass, durable and lightweight for easy transport and installation. Features high conversion rate, smart circuit, dual USB and DC output interface for stable current output without damaging charging equipment. Large screen LCD display controller with adjustable charging and discharging parameters, power off memory function, and clear status display. Suitable for home, industry, and business use. Built-in protection functions include over current, short circuit, open circuit, and reverse connection protection, all self-healing without damaging the controller. Complete 3-stage charging management improves system efficiency and extends battery life. Controller dual USB output supports up to 25A current for mobile phone charging. Dual MOS anti-backflow circuit with ultra-low heat generation. Install in a flat, well-ventilated place. Compatible with mobile phones, power banks, laptops, tablets, GPS, and cameras. Includes car charger connector and battery clamp cable for emergency use. Waterproof solar panel withstands all weather conditions and provides continuous power even on cloudy days. Suitable for camping, hiking, and outdoor work. Note: Junction box is not waterproof, keep dry.