WFCO WF9855 WF-9800 Series Deck-Mount Converter/Charger - 55 Amp

Had a issue after install, plugged in voltage went straight to 14.6 DC volts with regular acid/lead RV battery.... After searching and watching videos on 9855 unit, found to lower voltage to 13.6 turn off or unplug everything pulling a DC load to unit, voltage dropped to 13.6 in less than 8 hours! Works great! And fairly quiet! Also easy installation.

Had a hard time diagnosing the problem at first. The original unit showed 12v DC output when disconnected from the panel. So I couldn’t understand why I had dead coach batteries after 4 days with full hookup to power. I kept looking for parasitic drains all over the coach without success. After some research online, I decided to replace this component and it fixed the problem. Evidently the old unit was still making 12v DC, but at very low amps - not sure how low, but not enough! I did consider upsizing from 55 amps to 65-75 to minimize my needed daily generator hours for charging the batteries while boon docking. Because space is at such a premium (as you can see in the photo) I decided to stay at 55 amps and retrofit all the interior lights to LED (22 in all) to lower the 12v load instead. This new unit was a direct replacement under the bed in my Fleetwood 31N Tioga Ranger. Receptacle plug for 120v AC power, 2 - connector lugs for the 12v DC power and a ground wire. Easy install and it works great. Hope the new one lasts as long as the original. I’m a happy camper now.

So far so good, will edit if need be.

This inverter was just what we needed! When our inverter went out we tried local stores and no one had it in stock. We found this one on Amazon and it was delivered before the stores could get us one and was cheaper to boot. It was easy to install and fixed the problem.

Fit like a glove and replace my original with no issues.

Works good so far hope it last longer than the original.

Worked very well on our 2019 Fifth wheeler. Great price and good quality.

I purchased this to replace the converter in my RV because the fan was noisy and my power was doing flaky things. I originally purchased an off-brand to save 50 bucks but when I installed it and it shorted out as soon as I connected it. So save yourself some time and purchase this one straight off you won't be sorry. It's silent and all of my electrical issues have been solved.