Best Runtime · 1 of 5
40000mAh Clip on Fan

- 40,000mAh, 150 hours
- 3.1 inch screw clamp
- 3 speeds, 1 to 5 hour timer
Our take
The long-runtime pick, with a screw clamp for stability.
Why it made the shortlist
The AVAVO is a clip-on fan with a 40,000mAh battery and a listed 150 hours of continuous use. It has a 3.1 inch clamp with an extra screw-tightening mechanism, a portable handle, 3 speeds, a 1 to 5 hour timer, night mode and a 720 degree adjustable head.
It has the biggest battery and the longest listed runtime here, ahead of the 10,000mAh Koonie and Gentsvip. The screw clamp is also more secure than a spring clip.
It suits campers who want a fan that runs for days from a cot or camp chair. The listing names golf cart and treadmill use.
What works
- Longest listed runtime at 150 hours
- Screw clamp holds firmly
- 720 degree adjustable head
- Night mode and timer
Watch out for
- Blade size is not stated
- Few details on fan blade size
- The catch
- A big battery adds weight to the clamp point.






