Upgrading WFCO Panel And Charger To Lithium In 2021 Grand Design Reflection 150

Published 08/26/2025

Question:

I have a 2021 Grand Design Refection 150. It has a WFCO Model WF-8930/50 system. I would like to change my dual 6V batteries to be lithium. What do you recommend?

asked by: Colin F

Expert Reply:

Hey there Colin, that's a good idea. Lithium is the way to go for more efficiency and longer run time. Since your WFCO WF-8930/50 is just the distribution panel (the breaker and fuse box), you don’t need to replace the whole thing. What you’ll be changing is the converter/charger that actually keeps your batteries charged. For lithium, you’ll want a unit that provides the right charging profile.

The best option we recommend is the Progressive Dynamics 9300 Series RV Converter Charger – 12V – 60A # PD79RR. It’s a reliable, lithium-compatible charger that will take the place of your old converter and tie right into your existing panel and batteries. You’ll connect it to power on the AC side through a breaker, then run its DC output to your panel’s DC bus and batteries (protected with a fuse or breaker on the positive line). Once set to lithium mode, it will give your new batteries the proper charge they need.

So bottom line: you keep your WF-8930/50 panel, swap in the # PD79RR converter/charger, and you’re ready to enjoy the benefits of lithium power. Does that sound like it suits your needs? Or were you thinking along the lines of something different?

expert reply by: Andrew N