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Product Overview
Power your 18650 lithium batteries with the CN3791 MPPT Adjustable Solar Charger Panel – a compact, efficient, and versatile charging solution designed for 3.7V cells. Whether you’re a DIY enthusiast, a hobbyist, or a professional, this charger board delivers reliable performance with built‑in safety features such as over‑voltage protection and PWM regulation.
Key Features
- MPPT (Maximum Power Point Tracking) technology for optimal solar energy extraction
- Adjustable output voltage options: 6V, 9V, or 12V to match various battery packs
- Built‑in over‑voltage protection (PMW) to safeguard your cells
- Compatible with 18650 Li‑Ion/Li‑Po batteries (3.7V nominal)
- Compact 4.5” × 3.5” PCB design – ideal for portable or embedded applications
- Low‑current, high‑efficiency charging with a maximum current of 2A
- Clear LED status indicators for power, charging, and fault conditions
- Robust, heat‑sinked output for stable performance under load
Technical Specifications
Input: 5–30V DC (solar panel or external power source)
Output: 3.7V (nominal) – 6V/9V/12V selectable
Max Current: 2A
Protection: Over‑voltage, over‑current, short‑circuit, and temperature protection
Dimensions: 4.5” × 3.5” (115mm × 90mm)
Weight: 70g (PCB only)
Applications
Ideal for portable solar kits, RC projects, electric bike accessories, and any DIY electronics that require a reliable lithium battery charger. The adjustable voltage and MPPT efficiency make it suitable for both small‑scale hobbyist setups and larger solar‑powered battery banks.
Why Choose the CN3791?
With its combination of MPPT efficiency, multiple output options, and comprehensive safety features, the CN3791 delivers a hassle‑free charging experience that maximizes battery lifespan and performance. Its compact footprint and clear status LEDs make it a top choice for anyone looking to integrate a high‑quality solar charger into their project.
Price: $ 2.53