Type-C 3 Speed 9V Boost Fan Charger Board

Type-C 9V Boost Stepless Handheld Fan Control Board Module BD

The Type-C 9V Boost Handheld Fan Control Board is an all-in-one circuit module designed for driving small DC brushless motors and managing single-cell lithium battery power. Built for makers, students, and DIY electronics enthusiasts in Bangladesh, this versatile board simplifies the creation and repair of portable fans. Powered via a modern Type-C USB port, it features a 5W lithium battery charging circuit capable of boosting a standard 3.7V to 4.2V lithium-ion or polymer battery up to 9V. Whether you are building an electronics science fair project or repairing a personal cooling device, this module provides efficient power regulation and motor management in a compact footprint suitable for Biggan Project innovations across BD.

Product Specifications

Features

• Integrated Boost Converter: Efficiently steps up a single-cell lithium battery voltage (3.7V-4.2V) to 5V, 7V, or 9V outputs.
• 3-Speed Gear Selection: Features an onboard push-button to cycle through 3 distinct speed settings and system shutdown.
• Color-Coded LED Indicators: Provides instant visual feedback for selected speeds (Red for 5V, Green for 7V, Blue for 9V).
• Simultaneous Charge and Discharge: Supports pass-through power, allowing the fan to operate while the connected battery is charging.
• Reverse Polarity Safeguards: Built-in reverse protection on both the battery and fan interfaces to prevent circuit damage.
• Ultra-Low Power Standby: Draws roughly 10µA when idle, preserving battery charge over extended storage periods.
• Plug-and-Play Connectors: Fitted with standard PH2.0 sockets for easy connection to pre-wired battery packs and mini motors.

Applications / Use Cases

• Building portable, rechargeable handheld mini fans for personal outdoor cooling.
• School and college Biggan Project setups demonstrating boost conversion and motor speed regulation.
• Custom desktop USB ventilation units and cooling pads for small electronic enclosures.
• Repairing or upgrading broken consumer handheld mini fans with reliable control boards in BD.
• DIY electronics projects requiring a step-up voltage module paired with a 1S lithium battery charger.

User Guide / How to Use

• Connect a standard 3.7V or 4.2V lithium battery (such as an 18650 cell) to the battery terminal using the PH2.0 connector. Ensure correct wire polarity.
• Plug the 5V/9V brushless fan motor into the fan terminal socket. Note that if using custom wiring, red and black lead orientations may need adjustment.
• Connect a Type-C USB cable from a standard 5V wall adapter or power bank to charge the attached lithium cell.
• Press the onboard tact button once to turn on the fan at Gear 1 (5V, Red LED).
• Press the button a second time to switch to Gear 2 (7V, Green LED) for medium speed.
• Press the button a third time for Gear 3 (9V, Blue LED) for maximum airflow output.
• Press the button a fourth time to cycle off the board and place it into low-power standby mode.

Frequently Asked Questions (FAQs)

• Q: Can this board run a fan without a battery attached?
  A: Yes, but when powered only via the Type-C input without a connected battery, the board can only operate in the lowest output speed setting (5V).
• Q: What type of motor can I connect to this control board?
  A: The output is designed for small DC brushless fan motors (typically 5 to 8 inches in size) operating within a 9V, 0.6A maximum current range.
• Q: What happens if the battery wires are attached in reverse?
  A: The board features integrated reverse protection at the battery terminal to safeguard internal components from reverse polarity mistakes.
• Q: What do the different colored lights on the board mean?
  A: The LEDs indicate active speed gears: Red light signifies 5V (Gear 1), Green light signifies 7V (Gear 2), and Blue light signifies 9V (Gear 3).

Challenges and Considerations

• Output current must not exceed 0.6A (600mA) continuously to prevent thermal overload on the boost circuit.
• When connecting third-party wiring to the fan socket, verify wire polarity visually, as swapping red and black wires may be necessary for proper motor rotation.
• Full output speeds (7V and 9V modes) require a high-discharge 3.7V lithium battery connected; USB power alone is restricted to the lowest speed tier.

Compatibility

• Compatible with 3.7V / 4.2V nominal ternary lithium batteries, 18650 Li-ion cells, and Li-Po rechargeable battery packs.
• Compatible with standard 5V, 7V, and 9V DC mini brushless motors drawing 600mA or less.
• Compatible with standard Type-C USB 5V power adapters, computer USB ports, and power banks.

Future Enhancement Options

• Adding an external toggle switch or extending the push-button leads for custom 3D-printed fan enclosures.
• Integrating a digital battery capacity indicator module to display exact voltage levels during operation.
• Upgrading the motor frame or bladed impeller to maximize airflow efficiency under the 9V boost setting.

Benefits

• Combines charging, boost conversion, and speed control into a single space-saving electronic module.
• Simplifies DIY portable fan assembly by eliminating the need for separate boost modules and charge controller boards.
• Provides reliable pass-through operation for uninterrupted cooling during charging sessions.
• Reduces overall component costs for student science projects and repair technicians throughout Bangladesh.

Conclusion

The Type-C 9V Boost Charging Handheld Fan Control Board offers an economical and compact solution for managing portable cooling devices. Combining charging capability, 3-speed step-up regulation, and built-in circuit protection onto a single module makes it an ideal pick for DIY electronics builders, repairs, and student science experiments across BD.

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