Whats makes the WFCO jump to 14.4?

Really there are Ozzy jokes? Saw him live a couple years ago. I blame sharon. That chick is evil. Ozzy could barely move. I felt sad watching him up there.

Best part of the night was Rob Zombie before ozzy. He yelled at the crowd for being lame having their cell phones out!!! Was hilarious!!! He told them this is a rock show. Put your effn phones away and live life. (not an exact quote)

Mex,

For shame poking fun at "the Prince of Darkness".

Go to Google
Look up Lucas Electric Jokes
Laugh yourself silly
You are now ready to hear about WFCO products

I can't speak for every WFCO converter. The one I observed worked as follows.
- Converter startup, (AC power applied)
- Converter attempts to supply 13.6 volts at its output.
- At 7 seconds after startup, if output voltage is 13.2 or less, boost mode is entered
- Boost mode continues for 4 hours

The wimpy wiring in most RVs makes it impossible for a low battery to pull the converter output down to 13.2. The converter isn't defective. It's that the converter design and RV design are not compatible.

The only thing that makes a WFCO go to 14.4 is MAGIC!

MY winnie goes over 14 volts daily for an hour or so, then drops back to about 13.7.
This is going by what my renogy mppt is showing me, prior to installing it, I didn't think it was ever going above 14.

My last late model camper had a WFCO. The batteries could be at 12.2v and no bulk charge on shore power.

Fortunately the Zamp kit would completely charge the batteries properly, eventually.

My PD converter chargers in 2 other rigs work properly.

On my PowerMax Boondocker converter/charger, 14.7 volts is "boost" mode...

I've caught my WFCO reading >14 from time to time. Still on first battery that came with a now 5 year old unit. Average about 4 months a year use. On shore power mostly.

Get an accumulator.