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  1. RV Power Converter
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WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 35 Amp
WFCO

WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 35 Amp

Part Number: WF26FR
In Stock
$246.47
Retail:$319.49
You Save: $73.02
RV Power Converter
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If your batteries aren't charging like they should, a new converter/charger may be the fix. This deck-mounted unit restores 12V power and automatically adjusts for lead-acid or lithium batteries without major rewiring. Great Prices for the best rv power converter from WFCO. WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 35 Amp part number WF26FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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WFCO RV Power Converter - WF26FR

  • 35 Amps
  • AGM
  • Gel
  • Lead Acid
  • Lithium
  • 12V
  • WFCO
  • Converter Only
  • Multi-Stage Charge
  • No Battery Mode Switch

If your batteries aren't charging like they should, a new converter/charger may be the fix. This deck-mounted unit restores 12V power and automatically adjusts for lead-acid or lithium batteries without major rewiring.


Highlights

  • 35-Amp Deck-Mounted Converter Charger: A straightforward way to restore reliable DC power without replacing your panel.
  • Auto-Detect Lithium & Lead-Acid Charging: Automatically charges your batteries correctly with no switches or guesswork.
  • Multi-Stage Charging Support: Uses battery-specific charging to reduce wear and support longer service life.
  • Stable DC Power Output: Runs lights and 12V systems smoothly, even if a battery isn't connected.
  • Quiet, Thermostatic Cooling Fan: Fan runs only when needed, keeping noise down during everyday use.
  • Simple Deck-Mount Installation: Integrated 15-amp power cord makes installation easier and more familiar.

Features to Know About

Reliable Charging Without Replacing Your Power Center


converter charger with human

When lights start dimming or batteries stop charging like they used to, it's easy to assume the whole power center needs to be replaced. In many cases, it's really just the converter that's worn out. This deck-mounted converter charger lets you restore clean, reliable DC power without tearing into a distribution panel that's still doing its job. It's a straightforward fix that gets your RV's electrical system back on track.

Does This Converter Work With Lead Acid and Lithium Batteries?

Yes. WFCO's Auto-Detect technology automatically recognizes lead-acid or lithium batteries and applies the correct profile. Lead-acid batteries receive 3-stage charging with higher voltage during bulk charging, then step down to normal, and trickle/float stages as they recover. Lithium batteries follow a two-stage process designed for faster, more consistent charging. The result is quicker recharge times and less day-to-day strain on your batteries, helping them last longer and perform more reliably.

Stable DC Power With Built-In Protection

RV electrical systems see a lot of use, and small power issues can turn into bigger headaches when they affect lights, control boards, or entertainment systems. This converter delivers stable DC power whether or not a battery is connected, helping keep sensitive electronics running smoothly. Built-in protections guard against over-current, over-temperature, over-voltage, and reverse polarity conditions, so wiring mistakes or sudden load changes don't cause damage.

What Makes This Converter a Practical Replacement


Converter with cord

Converter replacements don't always happen in wide-open compartments with perfect mounting surfaces. This deck-mounted converter is built to be flexible, so it can be installed horizontally, vertically, or even upside down depending on the space you're working with. The integrated 15-amp AC power cord keeps wiring straightforward, and the vented housing allows proper airflow in multiple mounting orientations. Insulated connections help protect wiring during installation and long-term use. It's a practical fit when your existing distribution panel is still in good shape and you just need a reliable converter charger to keep your RV's 12V systems running. If you'd like help with the install, you can use etrailer's installer locator to find a qualified shop near you.

Specs:

Dimensions & Weight:

  • Overall dimensions: 4-5/8" wide x 7-1/2" long x 4" tall
  • Weight: 4 lbs

Converter & Charging:

  • Battery compatibility: lead-acid (flooded, AGM) and lithium
  • Charging control: automatic battery type detection
  • Output current:
    • Lead-acid: 35 amps
    • Lithium: 32.5 amps
  • Output power: 600 watts
  • DC voltage range:
    • Lead-acid: 13.2V to 14.4V DC
    • Lithium: 13.6V to 14.6V DC
  • Charging stages:
    • Lead-acid: 3-stage charging
    • Lithium: 2-stage charging

AC Input:

  • Input voltage: 105V to 130V AC, 60 Hz
  • AC connection: integrated 15-amp power cord

Safety & Protection:

  • Over-current protection
  • Over-temperature protection
  • Over-voltage protection
  • Reverse-polarity protection
  • Short circuit protection
  • Integrated cooling system

Certifications & Compliance:

  • UL and cUL certified
  • FCC Class B compliant

Warranty:

  • 2-Years from date of purchase


WF-9835-AD-CB WFCO Technologies Auto-Detect Battery Converter Charger - Deck Mount - 12 Volts - 35 Amps

Installation Details WF26FR Installation instructions


California residents: click here


Video of WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 35 Amp

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of WFCO RV Power Converter - Converter Only - WF26FR

Hello, everybody. This is Jeff at etrailer. Today we're gonna take a look at this WFCO 12 volt deck mount auto-detect RV converter charger. Now, this converter is gonna keep your RV power smooth and steady, and it even adjusts itself to whatever battery you're using. It'll stay quiet, protects your system from electronic, electrical hiccups and it won't interfere with your electronics. Does use an auto-detect technology, which will recognize your battery's chemistry and automatically adjust the charging profile to match.

If it's a lead acid battery. It has a three-stage converter, which will handle every charging need for your RV, and if it's a lithium battery, has a multi-stage process which will ensure safe operating voltage replaces battery energy and balances the battery cells. This converter charger will provide a nice, clean and reliable DC power that powers electronics and appliances, delivers clean power with or without a battery. Now, the maximum power input on this is 600 watts. Continuous power output is 475 watts, and the output DC current is 35 amps.

It is a deck mount installation. Comes with this integrated three foot long 15 amp AC power cord. Now, the vertical mounting on this is gonna provide unobstructed ventilation for the fan right back here and the vent holes right here on the side. Uses fully insulated connections for protection, and it is an open top design for ease of use and effortless installation. This will give you protection against over current, over temperature, over voltage and reverse polarity.

As we mentioned back here, the cooling fan, this is gonna run only when needed for quiet operation. It is controlled by the current load attached to the converter, not by the temperature. Now, the distribution centers that we do sell separately is ideal to pair with this converter. Now, this is an FCC Class B compliance, which means this converter won't cause interference with TVs, radios or other signals. A few dimensions on this, overall length, one into the other seven and a half inches long.

The width on it is four and five eights inches wide and the overall height is four inches tall. Now, if you do have any other additional questions regarding this part or any other item that we carry, please feel free to reach out to us so we can help you get all the questions answered for you. But that's gonna do it for a look at this WFCO 12 volt deck Mount Auto-detect RV converter charger.

Ratings & Reviews

5.0

3 reviews
If your batteries aren't charging like they should, a new converter/charger may be the fix. This deck-mounted unit restores 12V power and automatically adjusts for lead-acid or lithium batteries without major rewiring.

by:

Works great



by:

installing on 2 Jan 2026 for a lifepo



by:

Very quick delivery and easy install and works perfectly. Happy


3
3

See what our Experts say about this WFCO RV Power Converter


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Mary K
Written by:
Mary K
Employee Alexander C
Updated by:
Alexander C
Employee Daron K
Updated by:
Daron K
Employee Dawn Z
Updated by:
Dawn Z
Employee Amanda M
Edited by:
Amanda M

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