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  1. RV Power Converter
  2. WFCO Technologies
  3. 35 Amps
  4. Lead Acid
  5. Lithium
  6. 12V
WFCO RV Power Center - 35 Amp - Auto-Detect - Black/Brown
WFCO Technologies

WFCO RV Power Center - 35 Amp - Auto-Detect - Black/Brown

Part Number: WF28FR
$268.55
RV Power Converter
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Upgrade your RV power center with 35 amps of smart charging. Auto-Detect senses lead acid or lithium batteries, adjusts the charge profile, and helps protect your battery from overcharging or undercharging. Great Prices for the best rv power converter from WFCO Technologies. WFCO RV Power Center - 35 Amp - Auto-Detect - Black/Brown part number WF28FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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WFCO Technologies RV Power Converter - WF28FR

  • 35 Amps
  • Lead Acid
  • Lithium
  • 12V
  • WFCO Technologies
  • Converter and AC/DC Panel
  • Multi-Stage Charge
  • No Battery Mode Switch

Upgrade your RV power center with 35 amps of smart charging. Auto-Detect senses lead acid or lithium batteries, adjusts the charge profile, and helps protect your battery from overcharging or undercharging.


Highlights

  • Auto-Detect Charging for Lead Acid or Lithium: Charging profiles switch automatically between compatible battery types without manual settings.
  • 35-Amp Output Supports Full RV Power Distribution: Powers 10 AC circuits and 11 DC branch circuits from one centralized power center.
  • Multi-Stage Charging Reduces Battery Wear: Bulk, absorption, and float charging modes manage voltage from 13.2V DC to 14.6V DC.
  • Microprocessor-Controlled Charging Removes Manual Switching: Battery charging adjusts automatically as your RV's power demands change.
  • Built-In Circuit Protection Handles Electrical Faults: Reverse polarity, overload, short circuit, and over-temperature protection shut down unsafe conditions.
  • Twin Breaker Compatibility Expands AC Circuit Capacity: Supports additional branch circuit flexibility in RVs with heavier AC power demands.

Features to know about

Automatic Charging for Mixed Battery Upgrades

Battery upgrades usually create charging problems when older converter systems can't recognize lithium batteries or require manual setting changes to work correctly. Auto-Detect technology identifies compatible lead acid or lithium-ion batteries and automatically switches charging profiles without external controls or dip switches. Your battery charging stays matched to the installed battery type instead of relying on manual setup every time the system changes.

35 Amps of DC Power for Daily RV Loads

Multiple lights, vent fans, water pumps, and charging devices running together can expose weak converter output during campground stays or longer trips. This power center delivers 35 amps of DC output with support for up to 10 AC circuits and 11 DC branch circuits from one centralized panel. Your RV's electrical system stays organized while core 12V equipment keeps operating under normal campsite demand.

Charging Modes That Reduce Battery Stress

Constant high-voltage charging shortens battery life fast, especially when your RV stays plugged into shore power for extended periods. The three-stage converter charger cycles through bulk, absorption, and float charging modes for lead acid batteries, while lithium charging uses a dedicated 2-stage profile with voltage output up to 14.6V DC. Your battery maintains proper charging behavior during storage, recovery, and active use instead of staying locked at one charging level.

Protection Systems That Respond to Electrical Faults

Electrical problems inside your RV can spread quickly when overloads, short circuits, or reversed battery connections hit the converter without protection built into the system. This unit includes reverse polarity, overload, short circuit, and over-temperature protection with automatic recovery under normal load conditions. Your power center shuts down unsafe electrical events before damage spreads through connected circuits.

Twin Breaker Support for Larger AC Setups

Adding appliances or expanding campground power distribution can fill standard breaker layouts fast in larger RV electrical systems. This power center supports twin breakers across its AC distribution section, allowing more branch circuit flexibility without moving to a larger panel footprint. Your RV can handle expanded AC circuit layouts while keeping the power center consolidated in one location.

Specs

Electrical:

  • Input voltage: 105V to 130V AC, 60 Hz
  • Input current: 7 amps
  • Input power: 600 watts
  • Output current: 35 amps
  • Continuous output power: 475 watts
  • Converter type: Three-stage converter charger
  • Frequency: 60 Hz

Charging:

  • Battery compatibility: Lead acid and lithium-ion
  • Charging technology: Auto-Detect battery detection
  • Lead acid voltage output range: 13.2V to 14.4V DC
  • Lithium-ion voltage output range: 13.2V to 14.6V DC
  • Bulk mode voltage: 14.4V DC
  • Absorption mode voltage: 13.6V DC
  • Float mode voltage: 13.2V DC
  • Charging modes:
    • Lead acid: 3-stage intelligent charge for VRLA and AGM batteries
    • Lithium: 2-stage intelligent charge
  • Intelligent charging stages: Absorption, bulk, and storage for VRLA and AGM batteries

Circuit Capacity:

  • AC circuits: 10 total
    • Main circuit: 1
    • Branch circuits: 9
    • Compatible with twin breakers
  • DC circuits: 11 total
    • 2 circuits rated up to 30 amps max
    • 9 circuits rated up to 20 amps max

Safety Features:

  • Over-temperature protection: Yes
  • Reverse polarity protection: Yes
  • Cooling system: Yes
  • Overload protection: Auto recovery on normal load, current limiting, and shutdown
  • Short circuit protection: Auto recovery on normal load and system shutdown upon short circuit

Construction and Installation:

  • Case material: Plastic
  • Case color: Black or brown
  • Dimensions: 14.17" long x 11.81" wide x 8.5" deep
  • Metric dimensions: 360 mm long x 300 mm wide x 216 mm deep
  • Weight: 6.61 lbs
  • Ventilation requirement: Requires minimum 2 cu ft vented area behind unit for cool air exchange
  • Zero-clearance rating: None

Certifications and Replacement Parts:

  • Certifications: FCC, UL, and cUL listed
  • Replacement board: WF-8935-MBA main board assembly, 35 amps


WF-8935-AD WFCO RV Power Center - 35 Amp - Auto-Detect - Black/Brown

Installation Details WF28FR Installation instructions


California residents: click here


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See what our Experts say about this WFCO Technologies RV Power Converter

  • Replacement for WFCO 8935 in 2021 Jayco Upgrading to Lithium Batteries
    Hey Jeff! We do have a direct replacement. The WFCO RV Power Center - 35 Amp # WF28FR is the upgraded version of your existing 8935. This has lithium compatibility with auto detect technology. The power center will detect the lithium batteries and select the correct charging profile. Since this is also an 8935 (8935-AD) it will fit in the same cutout you have now so you won't have to modify anything. Jayco tends to use Waygo connectors, so make sure you're careful when you put the power...
    view full answer...
  • Replacement for Parallax 7300 For Lithium Upgrade
    Hey Darren! Do you know the exact model of your Parallax 7300? There are different ratings and styles within the 7300 series. WFCO with the auto detect is a good option, but you're going to need to match it up with what you have now. You can choose from the following based on your Parallax model or output: -Parallax 7335 (35 Amp) - WFCO RV Power Center - 35 Amp - Auto-Detect # WF28FR -Parallax 7355 (55 Amp) - WFCO RV Power Center - 55 Amp - Auto-Detect # WF86FR -Parallax 7340 (Deck Mounted)...
    view full answer...


Info for this part was:

Employee Wilson B
Edited by:
Wilson B
Employee Alex H
Written by:
Alex H
Employee Kim H
Updated by:
Kim H

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