Will WFCO 55A Standalone Converter Charger Work Fine In Travel Trailer With 30A Shore Hookup?
Published 02/23/2026
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Question:
Will the WF38FR 55A work fine in a 30-amp travel trailer?
asked by: Dana
Expert Reply:
Yes Dana, absolutely. The # WF38FR 55A refers to DC output, not shore power draw. It will work perfectly in a 30-amp RV as long as it’s plugged into a properly protected 15A AC branch circuit and you have at least 6 gauge or thicker wires going to the battery(s).
For most 30A travel trailers:
- # WF58FR 45A = standard single-battery charging
- # WF38FR 55A = ideal for dual batteries or moderate lithium charging
Are you replacing an existing WFCO model, or upgrading from something else? And what batteries do you have?
Product Page this Question was Asked From
WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 55 Amp
- Power Converter
- Converter Only
- Automatic Switch
- 12V
- 55 Amps
- AC to DC
- AGM
- Gel
- Lead Acid
- Lithium
- RV
- Multi-Stage Charge
- WFCO
more information >
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Dana
2/23/2026
Ok excellent, I was worried I was looking at the wrong setup. Got confused with the amperages everywhere." I'll stick with the 55A since we have 2 200ah batteries that need charged together.