I will repeat my question:

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 Fri, Mar 4, 2016 at 1:06 PM, WILLIAM WITZ <pbwitz@sbcglobal.net> wrote:

> Let me be clear. the Battery Charge section of the Battery Charger is
> working fine. It is charging at 12 V. at 2,10, 20 amps. The section that
> puts out voltage to the 12 V. Muffin fan stop-ed working so I found a small
> step down adapter that is rated at 12 V. to power the cooling fan for the
> Charger.The adapter is putting out 17.V How long will the fan last at this
> Voltage? I ran it for five minutes and measured it with a I. R. gun and it
> was not over heating.Thanks Again, Bill 84 Westy
>