Solar Energy Management Module for 6V-24V Solar Panels

This solar energy management module is designed for 6V-24V solar panels.

It can charge a 3.7V rechargeable 14500 lithium-ion battery (battery not included) or other 3.7V Li-Ion batteries through a solar panel via a PH2.0 connector. It also provides a regulated 5V 1A output through USB connection and pin headers.

The module features MPPT (Maximum Power Point Tracking) function and multiple protection circuits, ensuring its high efficiency and stability during operation.

This module is suitable for solar-powered, low-power IoT, and other environmental protection projects.

Please read the Product Wiki before use.

Specifications

• Supports MPPT (Maximum Power Point Tracking) function to maximize the efficiency of the solar panel.
• Supports solar panel / USB connection for battery charging.
• Compatible with 6V-24V solar panels, with DC-002 jack input or screw terminal input.
• Built-in MPPT SET switch to select input level off level to improve charging efficiency.
• Two 5V output interfaces: pin headers and USB port.
• Built-in high-capacity aluminum electrolytic capacitor and SMD ceramic capacitor to reduce fluctuations for stable performance.
• Equipped with a 14500 battery socket and PH2.0 battery connector for connecting various types of 3.7V rechargeable lithium-ion batteries.
• Various LED indicators to monitor the status of the solar panel and battery.
• Multiple protection circuits: overcharge / overdischarge / reverse protection / overheat / overcurrent.

Hardware Specifications

• Solar panel input voltage (SOLAR IN): 6V-24V
• Micro USB input voltage (USB INPUT): 5V
• Pin header / USB output (USB OUTPUT): 5V 1A
• Charge cut-off voltage: 4.2V±1%
• Over-discharge protection voltage: 2.9V±1%
• Solar panel charging efficiency: ~78%
• USB charging efficiency: ~%82
• 3.7V battery boost output efficiency: ~%86
• Maximum idle current: <2mA
• Operating temperature: -40℃~85℃
• Dimensions: 65.2mm × 56.2mm × 22.9mm

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1. Solar panel charging input: Charged by a solar panel, DC-002 jack, or screw terminal

2. USB charging input: Charged via USB connection, connect a 5V power adapter through the Micro USB port

3. 5V/1A power output: Provides regulated 5V/1A output through USB port or 2.54mm pin header

4. Battery interfaces: To connect 3.7V rechargeable lithium-ion, PH2.0 connector, or 14500 battery holder

5. CS8501: USB power management chip for USB charging and 5V/1A boost output

6. CN3791: Solar energy management chip for solar panel charging and bucket input

7. Lithium-ion battery protection chip: Overcharge/discharge protection

8. Battery switch

9. MPPT SET switch (bottom side)

   • Supported levels: 6V/9V/12V/18V/24V

   • Choose the level closest to the input level to increase charging efficiency

10. Power button

11. Battery capacity indicators

12. USB charging indicators:

    • USB Charging: On during USB charging

    • USB Done: Turns on when the battery is fully charged via USB

13. Solar panel charging indicators:

    • Solar Charging: On while the solar panel is charging

    • Solar Done: Turns on when the battery is fully charged via the solar panel

    • Solar Warning: Lights up in case of solar panel reverse connection

14. Battery warning: Lights up in case of battery reverse connection

15. Power output indicator: 5V/1A output

Package Contents

1x Solar Energy Management Module