Solution for Needing Replacement for WFCO Converter 8735P that is Lithium Compatible
Updated 03/10/2026 | Published 10/20/2025
Question:
Hi, Is there a direct replacement to the 8735P that is compatible with lithium batteries and the same form factor (I.e., will sit in the same space as the 8735P)? Thanks, Jim
asked by: Jim
Expert Reply:
Hey Jim, to replace what you have with something that is Lithium compatible you would need the part # PD4045KA which is lithium compatible. It is also rated a little higher as well at 45 amps but it will still work great.
What you have now is 11 7/8 inches wide x 8 1/4 inches high x 5 inches deep. The # PD4045KA is just a little bit bigger at 12-1/4" long x 8-3/4" tall x 7-1/4" deep so it would work great in that regard as well.
Product Page this Question was Asked From
Progressive Dynamics 4000 Series Mini RV Converter w/ Charge Wizard and AC/DC Distribution Panel
- RV Power Converter
- Converter and AC/DC Panel
- Battery Mode Switch
- 12V
- 45 Amps
- AGM
- Gel
- Lead Acid
- Lithium
- Multi-Stage Charge
- Progressive Dynamics
more information >
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Jameson C.
11/13/2025
Hey Jim, how did the swap to the PD4045KA go with your setup? Did the slightly larger size fit into the space where your old 8735P was mounted? Your update could make it easier for the next person working on the same upgrade.