6 Best 35 Amp RV Converters in 2026: A Practical RV Guide

The Progressive Dynamics PD4635V is a 35 amp converter/charger from the Inteli-Power 4600 series with a Charge Wizard 4-stage charging system. The listing says it replaces the Parallax/Magnatek 6336 and the WFCO 8935 converter sections, and that the charger will not boil the battery. It is priced at $293.01.

The cost is $179 above the PowerMax PM4-35A and $231 above the VEVOR 35A, and in return you do not get a published lithium mode, since the listing text is silent on chemistries other than lead-acid. Against the Parallax 4435 at $319.45, it is $26 cheaper and describes its charging better.

The PowerMax PM4-35A is a deck-mount 35 amp converter charger whose listing states regulated 12V power up to 35 amps DC, smart multi-stage charging for lead-acid banks, and adjustable output so a properly configured lithium bank can be charged. It lists current limiting, reverse-polarity and thermal protection and sells for $114.

It also gives up the replacement-part naming that makes the Progressive easy to match.

Its listing names four stages (Fast, Standard, Trickle and Equalization), says it handles lead-acid and lithium, and offers three fixed output modes of 13.0, 14.6 and 16.5 volts. It can be wired in series or parallel for more output, and the same line comes in 35 to 125 amp models. It costs $129.95.

The 14.6 volt step is the one a LiFePO4 owner would select, so the lithium claim is checkable against the battery spec.

The VEVOR 35 Amp is the cheapest unit here at $61.90. It lists dedicated lead-acid and LiFePO4 modes, a fixed voltage mode with choices of 13.0, 14.6 and 16.5 volts, a temperature-triggered fan, a metal housing for heat dissipation, six protections and a 100 percent copper cable. The listing says it is suited to small batteries rated 30Ah to 50Ah.

The Fortron/Source FSV35-12A-4 is a 35 amp converter from the SRV series that converts 120VAC to a fixed 13.75VDC. The feature text covers electronics rather than RV setup: resistance to transient high current, very high efficiency, over-current and over-voltage protection, forced air cooling with overheat protection, and an MTBF above 100,000 hours. It is priced at $120.

It ranks fifth because it states no lithium mode and no list of fitted factory sections, and the title gives a four-stage claim that the feature text never breaks into steps. It does beat the VEVOR for people who want a simple, fixed 13.75 volt supply that will not let a bank climb to a dangerous voltage.

The Parallax 4435 is a deck-mount converter in the 4400 series, and its listing is the thinnest of the six: it gives package dimensions of 4.5 by 13 by 10.5 inches, a package weight of 8 pounds, Mexico as the country of origin, and part number 4435. It sells for $319.45.

It ranks last because it costs $26.44 more than the PD4635V with less published detail, and $205 more than the PowerMax PM4-35A. Against every other pick, you are buying a part number, not a feature list.