Replacement Power Converter For A Parallax/MagneTek 6300 Series Model 6345

Updated 08/11/2025 | Published 05/10/2025

Question:

My 1988 trailer currently has a functioning series 6300 A model 6345 power converter with battery charger It doesnt have a brand name but it is original to the trailer. When not using shore power, I run off two 24M-AGM 885MCA, 120RC batteries. I want to upgrade the power converter to something more modern If for no other reason than for more efficient charging. I also plan to install two 100W solar panels into the system. What do you recommend for replacing the power converter? FYI: when the AGM batteries die I do hope to convert to lithium ion. Thank you.

asked by: Kent H

Expert Reply:

Hey Kent,

That original power converter, although unnamed, is a Parallax or MagneTek brand converter. They are different companies but essentially the same part, or identical parts. With that said we do have a Progressive Dynamics Power Converter, # PD4645V, that would be a great upgrade and direct replacement for that model that you have. You'll be all set with solar as well, the converter would not play a factor in that system.

It is going to be compatible with your current AGM batteries, and be a great unit for the lithium ones you get down the road. Its got a built in charge wizard that's going to automatically kick in and start charging when needed. If yours is originally from 88' but still working, this is going to be a solid replacement with better efficiency that will last just as long.

Are you looking for a portable solar set up or more of a permanent install? We have those as well I can look for a few good options depending on what style you are wanting.

expert reply by: Nick S

Kent H.

5/14/2025

Yes, I would be interested in a permanent solar install. My trailer is small (15 foot), so real estate on the roof is at a premium. Currently I have two 100W solar panels kit that came with a Renogy ROVER 40A MPPT solar charge controller. Separately I purchased a Renogy 700W Pure Sine Wave Inverter. I thought this would be enough, but I need more power for off-grid applications. Depending on the size of the panels, I could fit either 2 large panels or maybe 4 small (42" x 21" panels like the panels I have now). Thank you.

Nick S.

5/14/2025

@KentH That is always the case with solar, how many can you fit! We have some larger 200 watt panels if you wanted to go the 2 larger panel route. The converter is not going to have an effect in your set up, but if you wanted to check them out it is part # GP39MR

Kent H.

8/3/2025

I need help with wiring. I purchased #PD4645V from e-trailer that you recommended. Separately I bought a couple of 320W solar panels that fit on the roof of my trailer. I also have a Renogy 700W Pure Sine Wave Inverter purchased separately. Can you provide me with a wiring diagram to connect everything? I found a diagram here: https://www.etrailer.com/question-580499.html?msockid=13517acf021d62993e5d691e035163ab. But in this diagram, I don't see a line to ground. Do I need an in-line switch to toggle between shore power AC vs. solar DC when off-grid? Maybe the #PD4645V doesn't need either of those. I'm not sure if this background info will be helpful.., I'm eventually going to switch from AGM to LiPo. My goal is to run Air conditioning off-grid. My air conditioner has a soft-start, so I'm hoping that it will start up off 640W of solar and run for at least an hour or so during the hottest part of the day. I suspect I will need double the solar and at least 2 large LiPo batteries to pull this off, but right now I'm trying to work with what I have.

Nick S.

8/5/2025

@KentH I attached the 2 instructions we have for that Progressive Dynamics replacement section. Typically for something like that we, along with the manufacturer, recommend reaching out to a professional for installation. You may be able to reach out to Progressive Dynamics for more diagrams but the 2 I attached are what we have available for install. You should not need any additional switch with the Progressive Dynamics section.

Helpful Links

instructions.aspx?pn=pd4645v

instructions.aspx?pn=pd4645v&alt=true

Charles C.

8/9/2025

Hello Nick, I am looking to purchase a power converter with charger unit to put aside as a back up in case a replacement becomes unavailable due to supply chain or other issues. I have a no name 6300 A model 6345. , options CLOIH , date code 337 I read a message to you from Kent H to you where you recommended a parallax/magneTec unit Any idea where I could purchase this unit?

Nick S.

8/11/2025

@CharlesC Hey Charles! The Model you currently have is a Magnetec based off of that model number. Progressive dynamics offers a direct replacement that you'd be able to have on board if need be. That is going to be part number # PD4645V. You can order it online or give us a call!