Converter for Lithium House Batteries And Lead Acid Chassis Battery on 2019 Winnebago 33C
Updated 10/27/2025 | Published 03/20/2025
Products Featured in This Question
Question:
I need to replace my on board converter a PD9245 in my 2019 Winnebago 33C - in order to charge my proposed upgrade to 2 - 100 Ah lithium batteries. I am leaning towards the PD9345V. I know it is programable to charge the lithium, but at the same time it also needs to be able to charge the chassis battery which of course is SLA. Is this converter able to do that without overcharging the SLA? Will I have to change the onboard wiring in some way to accommodate this? Thank you for your reply
asked by: Daryl T
Helpful Expert Reply:
Hey Daryl! The Progressive Dynamics 9300 Series RV Converter Charger # PD69RR will work with the lithium house batteries. However, we don't have a way to allow it to charge the lead acid chassis and lithium house batteries at the same time. There may be some other products out there that would allow for this but it isn't something we carry. Is there a reason you need it to charge both?
Realistically your alternator should be handling the charging of the chassis batteries so you could keep them totally separate and it wouldn't be an issue. You could also keep a separate battery charger like the NOCO # NOC37FR around if you need it in a pinch because the chassis batteries drained.
(click to enlarge)
Product Page this Question was Asked From
Progressive Dynamics 9300 Series RV Converter Charger - 12V - 45A
- RV Power Converter
- Converter Only
- No Battery Mode Switch
- 12V
- 45 Amps
- AGM
- Lead Acid
- Lithium
- Multi-Stage Charge
- Progressive Dynamics
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Will Progressive Dynamics 9200 Converter Work with a Lithium Battery?
- Q&A: What is Difference Between Progressive Dynamics Converters PD1940A and PD1940C
- Q&A: 45 Amp Converter with Charge Wizard Needed for RV and Lithium Batteries
- Q&A: Which Progressive Dynamics Converter for Lithium Batteries Should Replace PD9245C
- Q&A: Replacement AC/DC Fridge With Freezer
- Q&A: What Does the 75 AMP Go Power RV Converter and Smart Battery Charger Plug Into?
- Q&A: Is There a 2 or 3-Way Small Fridge/Freeze That's 2.4 or 3.5 Cu Ft?
- Article: Trailer Wiring Diagrams
- Article: How Many Batteries Do You Need to Run RV Air Conditioner?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: RV Roof Types: What Type of Roof Does My RV Have?
- Article: Best Bike Racks for Electric Bikes
Robin H.
10/27/2025
Hey Daryl, what did you end up doing for charging both your lithium house batteries and the SLA chassis battery? Your update could make it easier for others trying to balance the same setup.