Replacement Lithium Compatible Converter Charger for a WFCO model WF-9855
Updated 10/22/2025 | Published 03/29/2025
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Question:
I have a 2021 Grand Design Reflection 337RLS. I have replaced the lead acid batteries with lithium batteries. I need to replace the converter. Currently there is a WFCO model WF-9855. What is the correct replacement for the lithium batteries?
asked by: Craig C
Expert Reply:
Hey Craig! I have a couple options for you. I have talked to Progressive Dynamics in the past with this exact question and while I have a solution for you there is no replacement convertor that will allow you to upgrade to lithium batteries.
The best way to upgrade your WFCO model WF-8955 power center is a new converter and panel that would be compatible with lithium batteries. You will want the Progressive Dynamics RV Power Control Center item # PD4560K18LS8. This power center can switch between lead acid and lithium batteries and will work with the lithium batteries like item # GP99QR.
If you do not want to upgrade your entire panel you can use the Progressive Dynamics 9300 Series RV Converter Charger item # PD79RR to just replace the converter. It won't fit in the panel and you will need to run a separate 12v line with a new breaker. It measures 8" long x 9" wide x 3-5/8" deep.
If you have any additional questions feel free to throw them into the comment box below.
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Product Page this Question was Asked From
Go Power Sun Cycle Advanced Lithium RV Battery - LiFePo4 - Bluetooth - Group 24 - 12V - 100 Amp Hour
- Battery
- RV
- 12V
- Group 24
- 100 Ah
- Lithium
- Go Power
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Jerred H.
10/22/2025
Hey Craig, how did the Progressive Dynamics converter work out with your lithium batteries in the Reflection? Knowing how that setup performed could really help others planning a similar upgrade.