AMACOOL K50
AMACOOL Portable Waist Fan K50 Instruction Manual
Model: K50
1. Introduction and Overview
The AMACOOL Portable Waist Fan K50 is a versatile personal cooling device designed for various outdoor and indoor activities. Featuring a powerful motor, long-lasting battery, and multiple wearing options, it provides efficient airflow to keep you cool and comfortable. This manual provides essential information for the safe and effective operation of your fan.
2. Product Features
- Extended Battery Life: Equipped with a 10000mAh built-in battery, providing up to 40 hours of continuous airflow at the lowest speed and up to 8 hours at the strongest speed.
- Powerful Cooling: Features an upgraded motor delivering a maximum of 16000 RPM velocity airflow, ensuring quick and consistent cooling.
- Multi-functional Design: Can be used as a waist fan, neck fan (with included lanyard), or a desk fan.
- Emergency Features: Includes an ultra-bright LED light and an SOS flashlight function, useful for nighttime activities.
- Power Bank Functionality: A 5V-2A USB output port allows for emergency charging of mobile devices.
- Durable Construction: Designed for outdoor use with an anti-slip silicone cover and an upgraded Manganese steel clamp for strong grip and durability.
- Portable and Lightweight: Weighing only 0.63lb, it is easy to carry for camping, travel, fishing, hiking, and other activities.
- Digital Display: LED display shows current wind speed and battery percentage.
3. Package Contents
- AMACOOL Portable Waist Fan K50
- USB-C Charging Cable
- Adjustable Lanyard
- Instruction Manual
4. Parts Identification

Figure 4.1: Front view of the AMACOOL Portable Waist Fan K50, showing the main unit and a smaller, detached fan unit. The main unit features a power button and a digital display indicating battery percentage.
- Power Button: Located on the top surface, used to turn the fan on/off and adjust speed.
- Digital Display: Shows battery percentage and current fan speed.
- Air Outlet: Top opening where air is expelled.
- Air Inlet: Bottom opening where air is drawn in.
- Belt Clip: Strong Manganese steel clip for attaching to clothing or belts.
- Bracket/Stand: Integrated design allowing the fan to stand on a flat surface.
- USB-C Input Port: For charging the fan.
- USB-A Output Port: For charging external devices (power bank function).
- LED Light: Front-facing light for illumination.
- Lanyard Holes: For attaching the adjustable lanyard.
5. Setup
- Initial Charge: Before first use, fully charge the fan using the provided USB-C cable. Connect the USB-C end to the fan's input port and the USB-A end to a compatible 5V-2A USB power adapter (not included). The digital display will show charging progress.
- Lanyard Attachment (Optional): If using as a neck fan, attach the adjustable lanyard to the designated holes on the fan.
6. Operating Instructions
6.1 Power On/Off and Speed Adjustment
- To Power On: Press and hold the Power Button for 2 seconds. The fan will start at Speed 1.
- To Adjust Speed: Briefly press the Power Button to cycle through the 5 available speeds. The digital display will indicate the current speed level.
- To Power Off: Press and hold the Power Button for 2 seconds from any speed setting.
6.2 LED Light and SOS Function
- To Turn On LED Light: Briefly press the dedicated LED Light button.
- To Activate SOS Flashlight: With the LED light on, briefly press the LED Light button again to switch to SOS flashing mode.
- To Turn Off LED/SOS: Briefly press the LED Light button a third time.
6.3 Charging External Devices (Power Bank)
- Connect your device's charging cable to the USB-A output port on the fan.
- The fan's battery will begin charging your device.
6.4 Wearing and Placement Options

Figure 6.1: The fan clipped to a belt, providing upward airflow to cool the user's body, ideal for outdoor work.

Figure 6.2: The fan clipped to the front of clothing, providing direct cooling to the upper body.

Figure 6.3: The fan positioned at the back of the waist, blowing air up the shirt for comprehensive body cooling.
- Waist Clip: Use the integrated clip to attach the fan to your belt, waistband, or pocket. Position it to direct airflow up your shirt for optimal cooling.
- Neck Fan: Attach the adjustable lanyard and wear the fan around your neck for hands-free cooling, directing air towards your face and upper body.
- Desk Fan: Utilize the built-in bracket to stand the fan on any flat surface, such as a desk or table.
7. Maintenance
- Cleaning: Use a soft, dry cloth to wipe the exterior of the fan. Do not use harsh chemicals or abrasive materials. Ensure the fan is powered off before cleaning.
- Storage: Store the fan in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the fan regularly, even if not in constant use.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | Battery is depleted. | Charge the fan fully using the USB-C cable. |
| Weak airflow. | Fan is on a low speed setting. / Air inlets/outlets are blocked. | Increase the fan speed. / Check for and clear any obstructions. |
| Fan makes unusual noise. | Obstruction in fan blades. / Fan is on highest speed (normal noise level). | Power off the fan and carefully check for obstructions. / Note that noise levels of 50-60dB are normal at higher speeds. |
| Cannot charge external device. | Fan battery is too low. / Incorrect cable or port used. | Ensure the fan has sufficient charge. / Use the correct USB-A output port and a compatible charging cable for your device. |
9. Specifications
| Attribute | Detail |
|---|---|
| Brand | AMACOOL |
| Model Name | K50 |
| Color | Gray |
| Power Source | Battery Powered |
| Battery Capacity | 10000mAh |
| Max Work Time | Up to 40 hours (Speed 1) |
| Max RPM | 16000 RPM |
| Number of Power Levels | 5 |
| Product Dimensions | 1.81"D x 3.38"W x 3.85"H |
| Item Weight | 0.63 lb (320 Grams) |
| Noise Level | 50-60 dB |
| Charging Input | 5V-2A (USB-C) |
| Power Output | 5V-2A (USB-A) |
10. Warranty and Support
AMACOOL products are designed for durability and performance. For warranty information, technical support, or any inquiries regarding your AMACOOL Portable Waist Fan K50, please visit the official AMACOOL store or contact customer service through the details provided on the product packaging or the brand's official website.
You can find more information and support at the AMACOOL Store on Amazon.
This product is also part of the Transparency Program, ensuring product authenticity. Each item has a unique code that is verified before shipping.
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