WFCO WF-8955-AD-MBA Converter Is Showing Green Light When Charing Lithium Batteries

Question

Question:

Purchased your WFCO AD MDA converter for my lithium batteries in my gulfstream 24 foot conquest motorhome. Took the charge down to 30 and recharged. Still green. Didn’t turn blue??

asked by: Richard H

0

Expert Reply:

Hey Richard, thanks for reaching out. If the WF-8955-AD-MBA # WF76FR is still showing green after you installed it and discharged the batteries to around 30%, the first thing I'd check is whether the converter is actually seeing the batteries as lithium. The auto-detect WFCO boards don't switch to lithium mode instantly. They have to observe the battery voltage and charging behavior over a period of time before they'll change modes, and sometimes that can take several charge/discharge cycles.

So, I wouldn't panic quite yet. I'd put a meter on the batteries while the converter is actively charging and see what voltage it's actually producing. That'll tell us a lot more than the LED color.

What charging voltage are you seeing at the battery terminals when plugged into shore power?

expert reply by: Jesse M

0

Replacement Main Board Assembly for WFCO Auto-Detect RV Power Centers - 55 Amp
(click to enlarge)

Richard H.

6/23/2026

Checking the battery with shore power plugged in, it shows 100% charged with 13.66 voltage.

Richard H.

6/23/2026

So Jesse, he also set the batteries up with the neg from battery 1 neg to the neg on battery 2 then to the neg on smart shunt where had both negs individually from each battery to the shunt. Either way ok??

Jesse M.

6/24/2026

@RichardH Sounds like the batteries are wired in parallel so yes electrically that's fine as long as the shunt is still the only path back to the battery bank. It just might take a few more charge/discharge cycles to get the converter to switch over to lithium mode.

Lloyd

6/26/2026

Hi Richard I installed this converter in my lance trailer a few months ago, along with a 320ah LITIME battery. I can’t see the lights, but it has been working flawlessly charging my battery to 99% every time, which is good because you don’t want to charge lithium to 100%. If your battery has blue tooth I would just go by what that’s telling you. I also would recommend installing a smart shunt which you can get from Etrailer, ( they can recommend which one to get) it gives you even more detailed information on how your battery is doing than the BMS. Happy camping hope this helps Lloyd

Answer 1

Hey Lloyd, thanks for reaching out. We have just the thing. You can replace the main board assembly to make your WF-8955 compatible with Lithium batteries. For that you will need the following: - Replacement Main Board Assembly for WFCO Auto-Detect…

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Answer 2

Great question Mark, thanks for the details! Your WFCO WF-8955PEC-GE power center uses a removable converter section and the #WF76FR is the direct replacement main board assembly. It has WFCO's Auto Detect technology, which automatically switches…

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Answer 3

Hey Klara! Yes, the Replacement Main Board Assembly for WFCO Auto-Detect RV Power Centers #WF76FR will fit your WFCO 8955PEC. This is just a variation of the 8955 model so this main board will work as a drop-in replacement. Did yours fail or are you…

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Answer 4

Hey Charlie, the correct part from WFCO to replace your 8955 with one that is Lithium compatible is the part #WF76FR actually. The overall dimensions of this are 9-1/2" wide x 7-1/8" long x 4" tall. This actually auto detects the…

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Answer 5

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 6

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 7

Hey Jon; I was actually just talking to Furrion about heat options for the Chill Cube yesterday (1/21/2025). At this time, the only way to have heat with this unit is through a furnace on a ducted setup. The Furrion Chill Cube RV AC w/ Air…

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Answer 8

Hey Richard, thanks for reaching out. If the WF-8955-AD-MBA #WF76FR is still showing green after you installed it and discharged the batteries to around 30%, the first thing I'd check is whether the converter is actually seeing the batteries as…

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Answer 9

Hello Victor, thanks for reaching out. The Progressive Dynamics 9300 Series RV Converter Charger #PD79RR will work great for replacing your WFCO WF-9855 converter. We recommend this model as a replacement quite frequently in fact, since it has the…

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Answer 10

Hey Ron, great question! The new PowerMax stand-alone converters like the 45A #PM34VR, 55A #PM94VR, 60A #PM44VR, and 100A #PM84VR give you three selectable charging modes so you’re not locked into one charging behavior. 3-stage mode factory default:…

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Answer 11

To convert the WFCO WF-8955PEC to be lithium compatible you'd need the part #PD4655V and you'd be set. This fits in the panel without any modifications.

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Answer 12

Hey Jim, It is hard to say which is better since both options are great. The WFCO #WF38FR is fairly newer to us so our experience is not as full like it is with the Progressive Dynamics #PD79RR. The Progressive Dynamics Converter is something I have…

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WFCO WF-8955-AD-MBA Converter Is Showing Green Light When Charing Lithium Batteries

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