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Upgrades or replaces the converter section for 35-amp Parallax/Magnetek or WFCO RV power centers. Works with Parallax/Magnetek model 6336 and WFCO model 8935. Built-in Charge Wizard's multistage charging process helps extend battery life.
Features:
Specs:
Alternate Instructions
California residents: click here
Delivery was very fast.
The unit is working well.
The only thin is the connexions to the new fuse panel. I had to rewire + and - because of the way the panel is done.
Replaced a wfco 3935 ad that would not switch to lifpo battery. Progressive dynamics has a jumper that you move to li position . Installed , turned on and it changed batteries to 14.5 volts . This is the third camper that came with the wfco converter and they have never worked. I have changed them all to Progressive dynamics converters and they all work as they should. Some small modifications were needed to fit in the place of the original converter, no big deal .
Great customer service, very helpful. The component was an easy 1:1 replacement, instructions were clear. I purchased this so I could upgrade my Class B house battery to an AGM. The converter is functioning flawlessly.
My husband replaced the distribution panel in our 2005 Featherlite horse trailer w/living quarters. He said it was easy and this new one works great!
Well i was told by etrailer this would not fit my magnetek series 6300a model 6325,25 amp inverter,i called progressive dynamic they said it will fit but charge at higher rate and is lithium battery capadable which i was doing .it was a direct fit no problems.
This was purchased to replace a 25 yr old Magnetek unit in my VW Eurovan Camper. Finished the installation and thus far pleased with it's performance.
Rapid shipping, nice looking unit, seems well built. I will update review after installation.
Outstanding I looked all over for this part and the few I found the soonest I could get one was at least 8 days out. I found one with you people and I couldn't believe that besides free shipping, for a few dollars more I received it The next day. It arrived and was the perfect replacement. Thank you so much
Very quick shipping. Product was installed by an etrailer recommended RV repair tech - Patriot RV Tech, Fort Worth, TX. Everything checked out OK when installation complete. The converter box was charging the battery as it should. Won't know how it really works until we go on vacation later in the year.
I have a 2000 Skyline Layton trailer. I recently upgraded from lead acid batteries to a LiFePO4 battery. This new 35 amp smart converter makes it possible for me to get close to 100 percent charge on my new battery as opposed to about 80 percent with my old converter. It works great!
Finally solved the problem of the batteries going dead.
Product fit the space correctly, was reasonably easy to install provided you are capable of this type of task, and appears to be operating as promised. Written Instructions were a bit lacking, which necessitated me calling and speaking with the manufacturers technical department.
Mitchell
6/6/2025
Working as promised. No issues.
Works great. I have an older mid 90's travel trailer, very nice retrofit to update. multistage charger works great, there's documentation that shows the charge profiles and this will be much healthier for batteries. Voltage is rock solid and right on par. Unit is much quieter than the old humming transformer, lighter, etc. Has LEDs to indicate blown fuse or stray load on a circuit, install pretty easy if your familiar with electrical, but it was a project. I changed out my 110v breakers as well while I was at it(BD style) as they were 30 years old, just got them from home depot. Nice rebuild. There is a charge status indicator on fuse board that blinks green, since my bed is right next to it, some light escapes out the cover, so I just put little piece of electrical tape over the led, but it for most people probably not an issue. Also the turbo boost charge mode is nice when running off grid, I can top my 2 batteries up off the generator in half hour while making breakfast and be good for the whole next night of running CPAP. also the low and slow maintenance mode is nice for long term storage. Highly recommend doing upgrade if you have this style Magnatek converter in your rig
The included instructions were excellent. No awkward English, just clear step-by-step instructions for a variety of scenarios.
Dale
6/21/2025
No problems after a year of use on the grid or solar.
Kate F.
6/23/2025
So far so good. The replacement went well, instructions were spot on. Easy to do. I called Amy at etrailer.com to make sure that this was the right replacement, she knew her stuff. Now all I have to do is use it. Thanks Amy
Delivered fast. Instructions were clear and easy. Works as expected
This is a quality product much better than the converter that I am replacing easy installation fit like a glove I will be buying all my RV parts from E trailer from now on
Easy to install. Updated my old one and now charges my battery. Couldn't be happier with this. Thanks etrailer.
HAPPY WITH PURCHASE. IT IS WORKING GREAT, SO FAR.ALWAYS GREAT DEALING WITH ETRAILER. CUSTOMER SERVICE TOP NOTCH. MORE COMPANIES SHOULD TAKE NOTE.
Upon arrival, a thorough inspection was conducted. Everything appears to be as described. I can't simulate or test this unit due to lack of equipment; hence, functionality shall be determined after installation.
The folks at etrailer are ON IT! Incredibly, Receive my part in 3 days!! Installed and working! Thank you etrailer.com!
It worked great ,install went smooth,could not ask for better,now my battery charges and lights even seem brighter. thanks for your help
Wonderful upgrade! Easy to install and works great. I feel so much safer knowing this unit is in our older RV.
Adam
5/17/2025
Product has worked flawlessly and reliably. The peace of mind we have after installing this modern unit into an older RV cannot be measured. We would make this the first upgrade to any RV, every time. Wonderful purchase.
Very efficient, easy to understand
Has worked great!
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Brooke M.
2/21/2025
Im so happy to hear that, TJ, thank you! Are you fixing up your RV for an upcoming trip?