Replacement Lower Section for Parallex 8355 that is Lithium Compatible
Updated 01/05/2026 | Published 09/28/2024
Question:
Hello, we have a Parallex 8355 in our travel trailer, and like Peter H above we are planning to switch to lithium-ion batteries. So we need to upgrade the converter. Above you recommended the PD4655V as a compatible converter upgrade for lithium-ion batteries. This looked like a good option, and we were getting ready to purchase it. But digging deeper it appears the PD4655V only has a single-stage 14.4V charging profile for li-ion batteries. Can you recommend an alternative replacement converter with a multi-stage li-ion charge profile? Hopefully one that “plays nicely” with our existing Parallax 8355. Thank you for your time.
asked by: JP
Expert Reply:
Hey JP, the only option we have is the part # PD4655V that you referenced. This does have a single stage lithium battery charger which is all that lithium batteries require. This does replace the lower section of your 8355 so it does play nicely.
Product Page this Question was Asked From
Progressive Dynamics Replacement Section for AC/DC Power Distribution Panel - 55 Amp
- Accessories and Parts
- RV Power Converter
- Converter Section
- 55 Amp
- Progressive Dynamics
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Jameson C.
1/5/2026
Hey JP, how did the swap to the PD4655V go with your Parallax 8355 setup? It sounds like that single-stage charger should have worked smoothly with your lithium batteries. Sharing how it performed could help others planning the same upgrade.