5A MPPT Solar Charge Controller DC-DC Step-Down Charging Board
5A MPPT Solar Charge Controller DC-DC Step-Down Charging Board
5A MPPT Solar Panel Charge Controller — DC-DC Step-Down Charging Board
Maximize every watt from your solar panels with this compact, intelligent 5A MPPT (Maximum Power Point Tracking) DC-to-DC Step-Down Charging Board. Engineered for low power consumption and reliable battery charging, this module is ideal for off-grid solar setups, solar street lights, wind turbine systems, and DIY renewable energy projects. It supports charging of lithium, nickel-cadmium, and nickel-metal hydride battery packs with automatic intelligent charge management built in.
Key Features
- True MPPT Function: Automatically tracks the solar panel's maximum power point for optimal energy harvesting efficiency.
- Wide Input Range: Accepts DC 8–28V input — compatible with 9V, 12V, 18V, and 24V solar panels and small wind turbines.
- Adjustable Output: Stepless DC 5–26V output voltage adjustment to match your battery pack requirements.
- Multi-Battery Compatibility: Charges lithium, nickel-cadmium (NiCd), and nickel-metal hydride (NiMH) battery packs.
- Low Power Consumption: Smart design minimizes standby draw, making it ideal for always-on solar applications.
- High-Grade Low-ESR Capacitors: Input and output terminals use dedicated high-frequency, low-resistance electrolytic capacitors to ensure clean output and effective ripple filtering.
- Compact & Mountable: Dimensions of 57.8 × 36.75 mm with 3 mm mounting holes (hole spacing: 32 mm wide × 52 mm long) for easy panel integration.
- Application Range: Suitable for 1W–100W systems.
- Lightweight: Only 41 g.
Specifications
| Input Voltage | DC 8–28V (DC only — do not connect AC) |
| Output Voltage | DC 5–26V (stepless adjustable) |
| Max Current | 5A |
| Application Range | 1W–100W |
| Dimensions | 57.8 × 36.75 mm |
| Hole Spacing | 32 mm (W) × 52 mm (L) |
| Hole Diameter | 3 mm |
| Weight | 41 g |
| Country of Origin | Made in China |
Compatible Applications
- Off-grid solar charging systems (9V, 12V, 18V, 24V panels)
- Solar street lighting
- Small wind turbine charging
- DIY lithium & NiMH battery pack projects
- Portable power stations and remote sensor arrays
Package Contents
- 1× DC-DC Step-Down MPPT Charging Board
Note: Colors may vary slightly due to screen settings. Please allow ±1–3 cm tolerance due to manual measurement. DC input only — never connect to AC power.
For more information on solar energy systems and best practices, visit the U.S. Department of Energy — Solar Energy Basics.
Learn more: Battery charger
Frequently Asked Questions
Q: What battery types does this MPPT solar charge controller support?
A: This DC-to-DC step-down charging board supports lithium (Li-ion/LiPo), nickel-cadmium (NiCd), and nickel-metal hydride (NiMH) battery packs, making it highly versatile for a wide range of DIY solar and renewable energy projects.
Q: What solar panel voltages are compatible with this charging board?
A: The board accepts any DC input from 8V to 28V, making it compatible with common 9V, 12V, 18V, and 24V solar panels, as well as small wind turbines operating in that voltage range.
Q: Can I use this board with an AC power source?
A: No — this module is designed for DC input only. Do not connect it to an AC power source, as this may damage the board and void functionality.
Q: How does the MPPT function improve charging efficiency?
A: The real MPPT (Maximum Power Point Tracking) algorithm continuously monitors and adjusts to extract the maximum available power from your solar panel under varying light and temperature conditions, resulting in more efficient charging compared to basic PWM controllers.