Welcome to our store! This Solar Panel Controller is designed for small off-grid solar power systems, such as home solar power systems and ships. It is a versatile product that can be used with various battery types including Lead Acid, Ternary Lithium, and Lithium Iron Phosphate. Key Features: 1. Self Setting: Customize the strong charging voltage and battery low voltage protection voltage based on your specific requirements. 2. PWM Charging: Utilizes a 3-stage PWM charging mode - strong charging, balanced charging, and floating charging, ensuring efficient and safe charging. 3. Intelligent Microcontroller: The controller features an intelligent microcontroller design, enabling all work processes to be controlled by software, enhancing reliability. 4. Durable Construction: Made of ABS and aluminum plate materials, this controller is wear-resistant, durable, and guarantees a long service life. 5. Specifications: - Material: ABS, Aluminum Plate - Product Size: Approx. 13 x 10 x 3cm / 5.1 x 3.9 x 1.2in - Sec10(10a): Maximum 175w Solar Panel - Sec20(20a): Maximum with 350w Solar Panel - Battery Type: Lead Acid, Ternary Lithium, Lithium Iron Phosphate - Voltage: 12V/24V Automatically Applicable - Charging Technology: PWM - Weight: Approx. 224g/7.9oz Package Includes: - 1 x Solar Panel Controller - 1 x User Manual 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service. Thank you for shopping with us!