Wathai 40x40x20mm 40mm 12V 2Pin DC Brushless Cooling Fan: Efficient Cooling Solution for Electronics Review

This fan solved the problem of a noisy fan in a Schumacher charger that was driving me crazy. The SSC 1000a was loud from the start and got worse the year I had it. This fan saved me from buying a new charger. Custom-fit and directly connected to the SKT. On board. Significantly quieter than the original fan. Time will tell how long it will last. Happy with the purchase and the fast delivery.

This fan was a great replacement for the fan in my DVR. As the cheapest option, it was slightly louder than the fan it replaced. With a little special mount isolation I was able to eliminate the vibrations and the noise level was acceptable.

This fan is noisy but I have ordered 2 more from other sellers and they are all noisy. This is a fan for my security recorder. I've found that QUIET fans don't move much air at all. I actually bought and tested a new DVR, it is very quiet but there is very little air movement which could explain the premature failure of the HD in mine. I think I'll live with the noise and extend the life of the HD.

These fans appear to be moving a lot of air, but they make a very loud noise at a frequency that makes them unusable on my desk. I literally heard them all over the house. I ended up replacing them with a Noctua fan. I'm keeping them and can use them on a project where noise isn't an issue.