Replacement for WFCO 9855 Converter in Travel Trailer

Updated 02/10/2026 | Published 01/19/2026

Products Featured in This Question

WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 55 Amp

(14)

$267.89

Progressive Dynamics 9300 Series RV Converter Charger - 12V - 60A

(198)

$278.45

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.

expert reply by: Robin H

WFCO Auto-Detect RV Converter Charger
(click to enlarge)

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.