RV converter and power-center finder
The converter in an older RV is usually a model nobody sells any more: a Parallax 7355, a Magnetek 6335, an Iota DLS-55. Every major maker publishes a chart saying what replaces those, and each chart is written from its own side, so no single one of them answers the question. Type the model on your unit and this answers from each chart it reads.
Every part number below is a maker's, taken from a chart cited beside it. Nothing is sent anywhere.
What converter do you have?
How to get it: the converter is usually behind the breaker panel or under the bed, and its model is printed on a label on the case. Old ones read like 7355, 6335, DLS-55 or PD9160. A model number on its own is enough; the maker is not needed.
Why an old converter number is worth looking up
A converter takes shore power and turns it into the 12 volts the coach runs on, and it also charges the battery. The ones from the 1990s and 2000s were built to a different charging profile from the one a modern battery wants, and the maker that built them is often gone: Magnetek became Parallax, Parallax's power center line is discontinued, and Elixir, Centurion, Todd and B-W no longer exist as brands you can call.
The makers who still sell converters publish cross-reference charts precisely because of this, and they are the authority on what fits. Progressive Dynamics' chart names its own replacement for each old model, and PowerMax's names its own. The two disagree, which is the point of showing both: each maker recommends its own product, and neither chart is neutral.
What the charts cover, and what they do not
All three charts are read, two of them automatically and one by hand. WFCO publishes the widest chart of the three, covering eleven other brands, but its columns sit side by side across the page and wrap, so reading it automatically would mean guessing which model pairs with which, and a wrong converter number is the one failure this tool must not have. Its Magnetek column and its 6300, 7300 and 8300 series rows were read off the chart by eye instead, one row at a time, and they are cited to it like every other row.
The Magnetek rows matter most. Its 6300, 7300 and 8300 series are among the most common old power centers in an RV, Magnetek became Parallax, and neither of the other two charts names a Magnetek model at all. The rest of WFCO's chart is still worth opening by hand for anything this tool does not find, and it is linked for that reason rather than as a formality.
These charts also do not cover every converter ever built. If a model is missing, that is a gap in the charts rather than a statement about your unit, and the maker's support page is the next step.
Converter, power center, or converter section
They are three different things and the charts name them separately, so know which one you have. A deck mount converter is a box on its own, and it usually sits behind the breaker panel. A power center is the converter and the 120-volt breaker panel and the 12-volt fuse board in one enclosure, which is what most travel trailers have. A converter section is just the converter part of that assembly, sold on its own so the enclosure and the panels can stay in place.
That distinction decides whether the job is a box swap or a wiring job, and the charts carry it in their own wording, which is where the answer above gets the form factor it shows.
What this does not do
It does not tell you what amperage you need. A converter is sized to the coach's 12-volt load, and stepping up from a 45-amp unit to a 60-amp one is usually safe and sometimes pointless, depending on what is actually running. The old unit's rating, on the same label as the model, is the number to match.
It also does not cover inverters, transfer switches or solar controllers as a class. The charts fold a few of those in, and where they do, the row says so.
And it does not diagnose anything. If the converter is running but the battery is not charging, that is a test rather than a replacement, and the converter not charging guide walks through the readings that tell the two apart.
Where to go next
The RV converter not charging guide is the diagnostic side of the same part. RV electrical problems covers the whole 12-volt system it feeds, and the battery runtime calculator shows what the bank does with the output. The parts page lists the converter and charger and the distribution panel as separate parts. Swapping a converter is a job a mobile technician can do, and the directory finds one by state.
Sources
- Progressive Dynamics, converter cross-reference guide: the chart read for this tool. Your current model, its form factor, and Progressive Dynamics' own replacement for lead-acid or AGM batteries and for lithium, Iota, Parallax, WFCO, PowerMax and its own older series included
- PowerMax Converters, replacement comparison: the second chart read for this tool, naming PowerMax's replacement for WFCO, Iota and Progressive Dynamics models, including the converter replacement boards and the transfer switches
- WFCO, Torque Chart replacement crossover: the widest of the three charts, covering Magnetek, Parallax, Progressive Dynamics, Iota, Furrion, PowerMax, Go Power, Xantrex, Magnum, Precision Circuits and Intellitec. Its Magnetek column and its 6300, 7300 and 8300 series rows are transcribed into this tool by hand; the rest of it is a link rather than a lookup, because its layout cannot be read automatically without risking a wrong part number
- OriginRV, electrical manuals: the makers' converter and power-center manuals, linked at the maker
By OriginRV. Last reviewed on Nov 2, 2026.
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