Replacement for WFCO 9855 Converter in Travel Trailer
Updated 02/10/2026 | Published 01/19/2026
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Question:
I have a WF 9855 converter in my travel trailer that I need to replace. I’d like to upgrade to a better model probably a Progressive Dynamics. Which model do you recommend?
asked by: Kevin G
Expert Reply:
Hey Kevin! Are you replacing it because you're upgrading to lithium or is there a specific reason you don't like it? WFCO products are pretty nice, and the new WFCO Auto-Detect RV Converter Charger # WF38FR would be the direct replacement. This is lithium compatible with their auto-detect feature and multi-stage charging.
If you would rather go with Progressive Dynamics we also carry the PD 9300 Series RV Converter Charger - 12V - 60A # PD79RR. They don't make a 55 amp model so the 60 amp here is the best option. You really can't go wrong with either but personally I would save a little money and stick with the WFCO.
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Product Page this Question was Asked From
WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 55 Amp
- RV Power Converter
- Converter Only
- No Battery Mode Switch
- 12V
- 55 Amps
- AGM
- Gel
- Lead Acid
- Lithium
- Multi-Stage Charge
- WFCO
more information >
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Robin H.
2/10/2026
Hey Kevin, how did things turn out with replacing your WF 9855 converter? Did you end up going with the WFCO Auto-Detect or the Progressive Dynamics model? Your update could make it easier for others deciding between those two options.