YENOCK DC In 5V To DC 9v 12v out Voltage Converter USB Booster Adjustable Step-up Switch

I think this is a great product very versatile, I can now power my 12 volt fan thank you

Tried to use this unit with a USB power bank to operate my Nikon camera when out in the field and away from a constant power source. The 9v setting was adequate to convert the 5v USB output from the battery bank up to 9v for camera to operate (only needs ~7.4v draw) and worked well at first but the adapter would auto-shutoff after a few minutes of usage and not sure why. Not necessarily it intended usage but with the power bank still on and camera actively calling for constant voltage draw, not sure why it wouldn't continually operate. Seems otherwise well built and good for the money so may be useful for other applications.

Lasted about 1 minute, then quit.Sending it back.

Works well.. thanks

Works exactly as described. A small well designed package that I'm happy exists. After all building this myself would not be nearly as small and rugged.