Replacement Converter for WFCO 9855 that is Lithium Compatible
Updated 01/28/2026 | Published 01/27/2026
Question:
I have a WFCO power converter model WF-9855. I am looking to replace my lead acid batteries with Lithium Iron Phosphate and would like a new converter to accommodate the battery swap with minimal drama. It needs to support both lithium and lead, maybe with higher current. What are my options?
asked by: Mike D
Expert Reply:
Hey Mike, the lithium compatible converter/charger you'd want to replace your WF-9855 would be the Progressive Dynamics # PD79RR which is rated for 60 amps and has a lithium and lead acid charge profile. Do you have a battery picked out already?
Product Page this Question was Asked From
Progressive Dynamics 9300 Series RV Converter Charger - 12V - 60A
- RV Power Converter
- Converter Only
- No Battery Mode Switch
- 12V
- 60 Amps
- AGM
- Lead Acid
- Lithium
- Single-Stage Charge
- Progressive Dynamics
more information >
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Mike D.
1/28/2026
This is helpful. I need to explore how to protect it when it is installed. My current inverter is mounted on a sidewall in my class C garage (probably for heat dissipation purposes). It has a protective shield around it that wont work with the recommended replacement. Ill have to figure out something new. i have not yet selected my battery. I currently have 2 group 24 marine batteries wired in parallel under my stairs. I am thinking of supporting 2 100ah lithium with internal BMS. I don't boondock frequently and one 100 ah battery may be sufficient for now but I want to allow for expansion in the same physical space and I like the backup aspect of having two.