Enhance your solar energy systems with this advanced Solar Charge Controller, expertly designed to provide intelligent and efficient battery charging management for 9V to 28V solar panels. Suitable for various battery types including nickel-cadmium, nickel-metal hydride, lithium-ion, lithium iron phosphate, and more, this controller supports power outputs ranging from 1W to 100W, making it ideal for solar street lights, wind turbines, battery packs, and other renewable energy applications. Key Features: · **Wide Application Range:** Compatible with 9V, 12V, 18V, and 24V solar panels to charge multiple battery types, supporting both single and multi-cell lithium batteries and high-power LEDs. · **Adjustable Output Voltage:** Steplessly adjustable DC output voltage from 5V to 26V allows precise regulation tailored to specific battery charging requirements. · **MPPT Maximum Power Point Tracking:** Built-in real MPPT technology automatically optimizes power harvesting from solar panels, maximizing charging efficiency even under varying sunlight conditions. · **Complete and Intelligent Charge Management:** Features a fully automatic three-stage charging mode with PWM switching frequency of 300kHz. It provides constant current charging adjustable via external resistors (preset to 5A or 2A versions), including trickle charging for deeply discharged batteries to extend battery lifespan. · **Charging Status Indicators:** Dual LED indicators provide clear charge status feedback — red light for charging, blue light for full charge, and a combined flashing pattern indicating battery disconnection. · **Robust Protection Functions:** Includes reverse input polarity protection with ultra-low voltage drop MOS tube, output backflow prevention to stop battery discharge at night, and prevention of damage caused by reverse connections. · **Ultra-Low Power Consumption:** Designed with an ultra-low dropout regulator to reduce power loss and increase overall conversion efficiency, reaching up to 93%-95% under optimal lighting, enhancing solar energy utilization. · **Industrial-Grade Durability:** Operates reliably under a wide temperature range (-40℃ to +85℃) with precise load regulation (±1%) and voltage regulation (±0.5%). · **Convenient Wiring:** Equipped with terminal connections for easy installation and secure wiring. Specifications: · Material: PCB · Input Voltage: DC 8-28V (AC input prohibited) · Output Voltage: DC 5-26V (steplessly adjustable) · Output Current: 2A or 5A (5A version shipped by default) · Charging Method: Fully automatic intelligent three-stage charging · MPPT Function: Real MPPT for maximum power point tracking · Conversion Efficiency: Up to 95% peak · Operating Temperature: -40℃ to +85℃ · No Load Current: 3mA Package Includes: · 1 x Solar Charge Controller This Solar Charge Controller is the ideal solution for maximizing your solar power system’s performance. Its intelligent charge management, comprehensive protection features, and professional-grade efficiency ensure your batteries charge safely and effectively, helping you harness solar energy with confidence and precision.