Solar Boost Controller 3.7V Step-Up Power Board 5V/9V/12V 2A
Solar Boost Controller 3.7V Step-Up Power Board 5V/9V/12V 2A
Solar Boost Controller — Adjustable Step-Up Power Board for Lithium Battery Systems
Power your solar-connected devices efficiently with this compact 3.7V / 3.2V Lithium Battery Solar Boost Controller. Designed for makers, engineers, and off-grid enthusiasts, this step-up power board converts energy from a small solar panel into a selectable 5V, 9V, or 12V output — making it a versatile solution for solar monitoring cameras, IoT sensors, environmental instruments, and more.
Key Features
- Universal Lithium Battery Input: Compatible with 3.2V and 3.7V lithium batteries (parallel connections supported, no input limit restriction).
- Adjustable Output Voltage: Switch between 5V, 9V, and 12V output — factory default set to 5V for immediate use.
- Max Output Current: Up to 2A, suitable for a wide range of low-power solar applications.
- Solar Panel Input: Accepts 5–6V solar panels with up to 100W input power.
- Continuous Output: No light-control function — battery continues to supply output while being charged by the solar panel simultaneously.
- Wide Application Range: Ideal for solar monitoring systems, network cameras, soil moisture sensors, hydrological monitoring instruments, and other outdoor electronics.
- Compact Board Design: Easy to integrate into DIY solar projects and enclosures.
Specifications
| Input Battery Voltage | 3.2V / 3.7V Lithium (parallel connection supported) |
| Max Solar Panel Input | 5–6V, <100W |
| Output Voltage | 5V / 9V / 12V (adjustable; default 5V) |
| Max Output Current | 2A |
| Light Control Function | None (always-on output) |
| Overcharge Protection | Not built-in — a battery protection board is recommended |
| Country of Origin | Made in China |
What's in the Box?
- 1× Solar Boost Controller Board
Important Notes
- This board does not include built-in overcharge protection. Install a battery protection board on the lithium cell before use.
- Slight color variations may occur due to monitor display differences.
- Allow ±1–10mm tolerance due to manual measurement.
Learn More About Solar Energy Systems
For background on solar power technology and off-grid energy systems, visit the U.S. Department of Energy — Solar Energy Technologies resource.
Learn more: Voltage regulator module
Frequently Asked Questions
Q: What lithium battery types are compatible with this solar boost controller?
A: This board is compatible with both 3.2V LiFePO4 and 3.7V Li-ion lithium batteries. Parallel connections are supported with no input limit, giving you flexibility in your solar power system design.
Q: Does the solar boost controller include overcharge protection for the battery?
A: No, the board does not include built-in overcharge protection. It is strongly recommended to install a dedicated battery protection board (BMS) on your lithium cell to safeguard against overcharging.
Q: How do I change the output voltage from the default 5V to 9V or 12V?
A: The output voltage can be adjusted using the onboard potentiometer or jumper settings (depending on board revision). The factory default is 5V. Carefully follow the board's labeling to select your desired output voltage (5V, 9V, or 12V) before connecting your load.
Q: What types of solar projects is this step-up power board best suited for?
A: This controller is ideal for solar monitoring cameras, IoT sensors, soil moisture sensors, hydrological monitoring instruments, and other off-grid or remote electronics that require a stable boosted DC output from a small lithium battery and solar panel setup.