WFCO WF-9855-AD

Last updated: November 2, 2026

WFCO WF-9855-AD
3.2/5#9 of 15 in standalone RV converters
3.2

An easy drop in for an RV that already has a WFCO 9800 deck mount, with lithium detection built in. A safe default for a typical trailer.

  • 55 AOutput
  • YesLithium mode
  • StandaloneBuild
  • 2 yearsWarranty
Check price at Amazon$248.99

Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Switches to a lithium profile on its own, so swapping to LiFePO4 needs no settings
  • Full output down to 100 V AC, so it keeps charging on a weak campground pedestal
  • Bolts in where most RVs already have a WFCO 9800 deck mount unit
  • Small enough to tuck under a bed or in a bay
Cons
  • Two year warranty, shorter than some rivals
  • No remote or display; you read status from an LED on the unit
  • Amazon listing is from a parts seller; WFCO voids the warranty for unauthorized internet sellers, so keep proof of purchase

The WFCO WF-9800-AD family

Every WFCO WF-9800-AD model we rank, smallest first. Ratings compare each against its own build.

ModelOutputRatingPrice
WFCO WF-9845-AD45 A3.0/5$239.99
WFCO WF-9855-AD (this one)55 A3.2/5$248.99
WFCO WF-9865-AD65 A3.2/5$304.99
WFCO WF-9875-AD75 A3.3/5$344.99

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its build. How we rank explains each one.

Specifications

Model numberWF-9855-AD-CB
Charging
Output55 A
Lithium modeYes
Multi-stage chargingYes
Build
BuildStandalone
Fan runs only as neededYes
Remote or displayNo
Weight5.5 lb
Warranty2 years

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