Solar Controller Charger – Dual USB 3A Step-Down Module
Solar Controller Charger – Dual USB 3A Step-Down Module
Solar Controller Charger – Dual USB 3A Step-Down Charging Module
Power your devices anywhere the sun shines with this compact Solar Controller Charger. Designed for makers, off-grid enthusiasts, and DIY electronics projects, this step-down charging module converts solar panel input into a clean, stable 5V USB output — letting you charge two devices simultaneously with ease.
Made in Mainland China.
Key Features
- High Efficiency: Up to 92% maximum power conversion efficiency — squeezing every bit of energy from your solar panel for faster, more reliable charging.
- Dual USB Output: Two USB ports deliver up to 5V/3A (MAX) combined output, so you can charge a smartphone and a tablet at the same time.
- Wide Input Range: Accepts 6V–40V DC input via a 5.5×2.1mm barrel jack, making it compatible with a broad range of solar panels and DC power sources.
- Compact & Portable: Measuring just 50×35×12mm and weighing next to nothing, this board slips into any project enclosure, backpack, or toolbox.
- Versatile Compatibility: Works with smartphones, tablets, power banks, and any USB 5V-powered device.
- Wide Operating Temperature: Rated for –40°C to +85°C, so it performs in harsh outdoor environments without skipping a beat.
Technical Specifications
| Input Voltage | 6V – 40V DC (5.5×2.1mm port) |
| Output Voltage | 5V / 3A (MAX) |
| Efficiency | 92% (MAX) |
| Switching Frequency | 150 kHz |
| Operating Temperature | –40°C to +85°C |
| Board Dimensions | 50 × 35 × 12 mm (L × W × H) |
| Color | Red PCB |
Package Contents
- 1 × Solar Controller Charger Module
- 1 × Wire
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Note: Actual color may vary slightly from images due to monitor calibration and lighting conditions. Please allow ±1–2mm tolerance in measurements.
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Frequently Asked Questions
Q: What solar panel size is compatible with this solar controller charger module?
A: This solar controller charger accepts any DC power source — including solar panels — with an output between 6V and 40V DC via a standard 5.5×2.1mm barrel connector. Most 10W–100W solar panels fall well within this range, making the module highly versatile for DIY solar setups.
Q: Can I charge two devices at the same time with this module?
A: Yes! The dual USB output supports simultaneous charging of two devices. The combined maximum output is 5V/3A, so charging speeds may vary depending on how many devices are connected and the available solar input power.
Q: Is this module suitable for outdoor and off-grid use?
A: Absolutely. The board is rated for operating temperatures from –40°C to +85°C, making it well-suited for outdoor, off-grid, camping, and remote DIY electronics applications. Its compact 50×35×12mm size makes integration into enclosures straightforward.