6 Best 100 Amp RV Converters in 2026: A Practical RV Guide

The WFCO WF-68100A-AD is a 100 amp deck-mount converter in the WF-6800 series that RV builders already install, so it fits the cutout and wiring of an existing 6800 series bay. The listing states that it automatically detects lead-acid or LiFePO4 batteries, holds full output down to 100 volts of AC input, and uses power factor corrected charging that it says is up to 30 percent more efficient. It is listed as UL/CSA and FCC compliant.

The cost is $519.99, which is about $300 more than the PowerMax PM3 and roughly five times the VEVOR. Against those, you are paying for the standards listing and the drop-in fit, not for extra amps, since every unit here shares the same 100A label.

The PowerMax PM4-100A lists up to 100 amps of regulated 12V output, multi-stage charging for lead-acid banks, and adjustable output so a lithium bank can be charged to its required settings. It is a standalone deck-mount box with current limiting, reverse-polarity and thermal protection, priced at $189.

It ranks second because it combines an adjustable lithium profile with a lower price than the PM3 unit of the same brand, which sells for $30 more with a nearly identical feature list. Compared with the WFCO, it gives up the detected-battery convenience and the published low-voltage behavior, so you set the profile yourself.

The RecPro 100 Amp converts 120VAC shore power into usable 12VDC, charges the battery while powering low voltage lights and appliances, and uses 4-stage charging. The listing says it works with both lead and lithium batteries and notes that the brand makes this line in 35, 45, 55, 60, 75 and 100 amp sizes. It sells for $189.95.

Compared with the generic 100A ranked last, it offers a clearer description of the charging stages.

The PowerMax PM3-100-SME carries the same feature list as the PM4: up to 100 amps of regulated 12V output, multi-stage charging for lead-acid, adjustable output for lithium, deck-mount format and built-in current limiting, reverse-polarity and thermal protection. It is priced at $219.

It ranks fourth because it costs $30 more than the PM4 and the listing text shows no difference in features or stated capability. It does stay ahead of the VEVOR and generic units by being a recognizable brand with a lithium adjustability claim.

The VEVOR 100 Amp is the cheapest unit here at $103.90 and publishes the most checkable controls: a 13V to 16.5V operating range, dedicated lead-acid and LiFePO4 modes, and fixed voltage options of 13.0V, 14.6V and 16.5V. It lists an intelligent cooling fan that starts above its rated temperature, a metal housing for heat dissipation, six protections and a 100 percent copper cable.

It sits fifth because the listing itself says it is suitable for large-capacity batteries rated 75Ah to 80Ah, which is a small bank for a 100 amp box and a mismatch worth noticing. Compared with the $163.99 generic unit, it explains its charge steps more clearly and states a cooling method.

This unbranded 100 amp converter lists a steady 100 amp output with three preset voltage modes of 13V, 14.6V and 16.5V, and four charging stages named Boost, Normal, Storage and Desulfation. The listing describes steel, plastic, aluminum alloy and copper construction and says the unit is meant for RVs, marine, automotive and car audio use. It is priced at $163.99.

It shares the same fixed modes as the VEVOR, so voltage choice is the same.