Can WFCO 9856 be Upgraded to 60 Amp Converter

Updated 12/29/2025 | Published 12/08/2025

Question:

I have installed two 6v again Rv rated at 225ah each. Am ordering new converter for game. Can I replace 2006 9856 wfco with 60amp model?

asked by: Sam D

Expert Reply:

Hey Sam, I looked up your 9856 wfco and since it is rated at 55 amps yes you could upgrade to a 60 amp setup like the Progressive Dynamics part # PD4060K that you referenced and you'd be fine. Normally if you go with a lot higher rated converter you have to also upgrade the wiring but since you are already really close to 55 amps you are fine.

expert reply by: Jameson C

Jameson C.

12/29/2025

Hey Sam, how did the upgrade to the 60-amp Progressive Dynamics converter go with your RV setup? Did it handle your pair of 6-volt batteries the way you expected? Your update could make it easier for the next person looking at a similar upgrade.