Kind Reminders:
1. While using batteries, please ensure you are using brand new and powerful 4 D-cell batteries (compatible with carbon D battery, alkaline D battery, or rechargeable NiMH battery). Weak batteries are not able to drive the fan properly.
2. While using the USB cable, please ensure the connecting USB port supplies 5V/1-2A rated power or it will not have enough power to run at high speed.
3. Different brands of D-cell batteries might have 0.5mm lengths of difference in the protrusion of the positive electrode. If you feel that the battery is loose after installation, you can adjust the spring plate in the battery compartment, and pull the ring out a little bit so it can be well fixed.
Troubleshooting:
Q: How does this fan work?
A: This fan can be powered by 4 D-cell batteries (not included) or USB power source, like computer, power bank and phone charger with the USB cable(included). (Note: This fan is not rechargeable)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Q: Why doesn't the fan work?
A: Please check whether the batteries are installed correctly or the USB cable is connected to device properly. If it still doesn’t work, please let us know through Amazon for help.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Q: How long will the battery last?
A: This fan works with 4 D-cell batteries (not included), and there are 3 settings and the fan can last for 214 hours with low speed, 46 hours with medium speed, and 12 hours with high speed.