37V to 5V 7V 9V Boost Board Fan Motor Speed Controller Board USB Rechargeable Fan Circuit Board Governor Step Up Module 3.7V to 5V 7V 9V Boost Board Fan Motor Speed Controller Board USB Rechargeable Fan Circuit Board Governor Step Up Module Feature: 1. Compact design: The control board adopts a miniaturized design, making it suitable for installation in devices with limited space. 2. Boost conversion function: The built-in boost circuit can boost from a lower battery voltage (such as a 3.7V lithium battery) to 5V, 7V or 9V to meet the working requirements of the fan motor. 3. Low standby current: In standby mode, the control board has an extremely low current consumption (such as 10uA), which helps to extend the battery life of the device. 4. Multi-voltage output support: The boost board can boost the battery voltage to multiple output voltages such as 5V, 7V, 9V, etc., suitable for fans with different power requirements. 5. Wide range of use: This type of control board is widely used in small handheld fans powered by lithium batteries. It has the advantages of high integration and low cost, and is suitable for the design requirements of portable devices. Product parameters: Product name: Boost board 9V charging fan control board Gear: 1st gear 5V red light on, 2nd gear 7V green light on, 3rd gear 9V blue light on Input: Type-C 5V Output: Voltage - 1st gear 5V; 2nd gear 7V; 3rd gear 9V; 4-down shutdown cycle, current cannot exceed 0.6A Button height: 6mm Aperture diameter: about 2.5mm Product size: 35.6mm*27mm Battery end: with PH2.0 female socket, connected to 4.2V ternary lithium battery or polymer lithium battery, such as 18650 lithium battery, battery end with reverse connection protection (delivery wiring, if you use this line to connect the fan end, you need to change the red and black direction of the line yourself) Connected to 3.7V lithium battery, charging power 5W, support charging and discharging at the same time, if not equipped with battery, can only run at the lowest gear. Fan end: with PH2.0 female socket, can connect 5-8 inch brushless motor, third gear 9V 600ma output, fan end with reverse connection protection Package list: Control board*1 Wire*1 _x000D_