Was the fan connected to the power supply when you measured its voltage?
The open circuit voltage of a power supply is usually considerably higher
than when it is under load.

Larry A.

On Thu, Mar 3, 2016 at 7:08 PM, WILLIAM WITZ <pbwitz@sbcglobal.net> wrote:

> I have a nice 12 V. Battery charger that I use on my Vanagon. The little
> muffin fan died I replaced with a another 12V. ball bearing fan but the
> power supply to said fan is putting out 17 V. how long do think said fan
> will last under these conditions? Over the last 10 years i have become fond
> of this battery charger is it time to let go? The charger itself seems to
> be working fine.Thanks, Bill Witz 84 Westy Tiico
>