MPPT Solar Charger Board DC5-18V 2.5A for 18650 Battery
MPPT Solar Charger Board DC5-18V 2.5A for 18650 Battery
MPPT Solar Charger Control Board — DC5–18V, 2.5A, Type-C & USB Output
Power your DIY projects and off-grid setups with this compact MPPT Solar Charging Management Module. Designed for 3.7V 18650 ternary lithium batteries, this versatile PCB board accepts input from a 5–18V solar panel, DC 5.5×2.1mm port, or Type-C connector — giving you the flexibility to charge from virtually any available power source. A stable 5V/2.1A USB output keeps your smartphones, tablets, and portable electronics topped up wherever you are.
Made in Mainland China.
Key Features
- Flexible Multi-Input Support: Compatible with 5–18V / 10–30W solar panels, DC 5.5×2.1mm, and Type-C inputs (one port at a time). Easily adapt to the most convenient power source for any scenario.
- Reliable Circuit Protection: Built-in anti-reverse connection and anti-backflow components plus insulated plastic protection on all interfaces — minimises risk of short circuits or component damage from incorrect wiring, extending module lifespan.
- Stable 5V / 2.1A USB Output: High-precision voltage-stabilising capacitors deliver consistent power output suitable for fast-charging most smartphones and portable digital devices.
- 4-Segment LED Battery Indicator: Clear, real-time battery level display with a light-transmitting plastic cover so you can monitor remaining charge at a glance — no extra tools needed.
- Compact & Durable Build: Rigid PCB with scratch-resistant plastic edge protection. Measuring just 70 × 34 mm and lightweight, it fits neatly into small DIY power banks, outdoor solar systems, and portable power projects.
Specifications
| Category | Solar Battery Charging Controller Module |
| Input Voltage | DC 5–18V (Solar Panel 10–30W) |
| Input Current (Max) | 2.5A |
| USB Output | DC 5V / 2.1A |
| Compatible Battery | 3.7V 18650 Ternary Lithium Battery |
| Input Ports | Solar Terminal, DC 5.5×2.1mm, Type-C |
| Dimensions | 70 mm × 34 mm |
| Material | Flame-retardant plastic, PCB, electronic components |
| Colour | Green main board, blue terminal blocks, silver/black interfaces |
| Quantity | 1 piece |
| Origin | Mainland China |
Ideal Applications
- DIY portable power bank assembly
- Small off-grid and outdoor solar power systems
- 3.7V 18650 lithium battery charging projects
- Maker and electronics hobbyist builds
Important Notes
- Photos are for illustrative purposes; please refer to the specifications above for exact dimensions.
- Minor measurement differences may occur due to manual measurement.
- Actual colours may vary slightly depending on your monitor settings.
- Only one input port should be connected at a time.
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Frequently Asked Questions
Q: What battery type is this MPPT solar charger module compatible with?
A: This solar charger control board is specifically designed for 3.7V 18650 ternary lithium batteries. It manages the full charge cycle — including MPPT optimisation from the solar panel — to keep your 18650 cells charged safely and efficiently.
Q: Can I connect the solar panel and Type-C input at the same time?
A: No — only one input port should be connected at any given time. You may choose between the solar panel terminal, the DC 5.5×2.1mm port, or the Type-C port based on the power source available to you, but simultaneous multi-input connection is not supported.
Q: What can I power with the 5V USB output on this module?
A: The USB output provides a stable 5V / 2.1A supply, which is suitable for charging most smartphones, portable Bluetooth speakers, small fans, and other USB-powered devices commonly used in off-grid or outdoor setups.
Q: What is the maximum solar panel wattage I can use with this board?
A: The module supports solar panels rated between 10W and 30W with an input voltage range of 5V to 18V and a maximum input current of 2.5A. Using a panel within these parameters will ensure optimal performance and protect the module's circuitry.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.