Replacement And Upgrade Options For WFCO Standalone Converter Charger In 2012 Coachmen
Published 02/17/2026
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Question:
My WFCO 45A just died in my 2012 Coachmen. Do I have to stay at 45 amps or can I move up to 55? Its a standalone converter charger, not part of power center box.
asked by: Brian
Expert Reply:
Hey Brian - if you’re replacing a WFCO 45A standalone converter/charger, the direct Auto-Detect replacement would be the # WF58FR. That keeps everything in the same output class and is usually a straightforward swap.
That said, many people take this opportunity to step up to the # WF38FR 55A for a little faster charging - especially if they’ve added a second battery or upgraded to lithium.
If you do move to 55 amps, just make sure your battery cables from the converter to the batteries are 6-gauge copper or thicker. Eight-gauge is generally fine up to about 50 amps, but once you cross that line, 6-gauge is the safer choice to avoid voltage and heat.
Are you still running a single battery, or have you expanded your bank over the years?
Product Page this Question was Asked From
WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 45 Amp
- Power Converter
- Converter Only
- Automatic Switch
- 12V
- 45 Amps
- AC to DC
- AGM
- Gel
- Lead Acid
- Lithium
- RV
- Multi-Stage Charge
- WFCO
more information >
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Brian
2/17/2026
It's just one 100ah battery to run to the inverter which then powers LED lights and fan, sometimes charger laptop or phone. Nothing too crazy.