DFRobot Solar Lipo Charger (3.7V) MPPT Solar Charge Controller

Effortlessly add solar charging to your project with this compact Solar LiPo Charger module, designed for a single 3.7V lithium battery. Featuring intelligent charging management and built‑in input reverse polarity protection, it delivers up to 500mA charge current (depending on your solar panel) for efficient energy harvesting. Ideal for low‑power, stand‑alone, or mobile embedded applications, it pairs perfectly with solar panels, wireless modules, and sensors to create self‑powered IoT or monitoring systems. Key Features: - Compatible with 3.7V lithium batteries (observe battery’s max charge current) - Input voltage range: 4.4V to 6V - Max charging current: 500mA - Charging cutoff voltage: 4.2V - Operating temperature: -40°C to +85°C - Compact module size: 33mm x 33mm x 12mm (1.30" x 1.30" x 0.47") - Simple, convenient connections for quick integration Charging Status LEDs: - No battery detected: Red LED flashing - Charging: Red LED on - Charge complete: Green LED on Build a reliable, green power solution quickly by combining this charger with a suitable solar panel and 3.7V LiPo battery, enabling continuous, maintenance‑light operation for your electronics.