Our old trailer (2007 Komfort) had a WFCO 8955 converter in it, I could NOT ever get it to go into bulk mode, not even when I moved it within a few feet of the batteries, tried everything. I did a thread on it. (I ended up putting a PD9280 in a new location closer to the batteries.) Any converter thread got pretty heated back then as I'm sure some of you will remember! ;)We just bought a 2019 ORV Timber Ridge which unfortunately also came with an WFCO, this time a 8955 Lis. This is the one with a lead/lithium switch.This trailer came with 3 - 100Ah LIthiums, has 600 watts of solar panels uptop and has a 12v Norcold fridge. (I might add another 200 watt panel and additional 100Ah Lithium if I need to?)So are these new WFCO still as bad as the old ones?If they're better I could replace the charger with a 8975 if it fits? (I'd have to upgrade the cables to the batteries I know)Either way I'll be wanting to upgrade the charger for one as big as possible that will run from my Honda 2000 genny.I'm hoping to shorten the learning curve re. lithium charging, this is all new to me.ThxWill

Interested to hear once you test it out. I can confirm in 2017 models, WFcOs are still junk.

Without a battery shunt like Renogy or Victron you'll never know what your charge rate is. Or the real state of charge of the batteries. Unless maybe your batteries are bluetooth themselves. I have a 2018 ORV Creekside with the old non lithium 8955. With a Renogy shunt I only get about 5 amps max charging current into two 12 volt flooded batteries. Drooling over all the Victron stuff and lithium batteries currently. I do have one 180 watt solar panel that came on the trailer (Zamp). It has capacity for two more.

waexplorer wrote:Without a battery shunt like Renogy or Victron you'll never know what your charge rate is. Or the real state of charge of the batteries. Unless maybe your batteries are bluetooth themselves. I have a 2018 ORV Creekside with the old non lithium 8955. With a Renogy shunt I only get about 5 amps max charging current into two 12 volt flooded batteries. Drooling over all the Victron stuff and lithium batteries currently. I do have one 180 watt solar panel that came on the trailer (Zamp). It has capacity for two more.I do have a shunt with a display, looks similar to the Victron one.

If your charging amps are above 40 amps I'd say that's ok. Most lithium batteries have BMS's that are 50 amp or 100 amp charge/discharge capable. 55 watts is the max system output including lights, accessories etc. Whatever is left is for charging. If you're not having issues I wouldn't change it yet. You want charge voltage around 14.4 for lithium. If it's 13.6 or so that is for flooded lead acid. Lithium batteries don't have float mode. There are several good youtube videos show lithium charge and discharge curves. Do you have the Zamp 30 amp solar controller above the bed like mine? Make sure it is set to lithium also.

I have a "crappy" WFCO 68100. It's 11 years old. I have no idea if it goes into bulk mode. Is that bad?

Are the new WFCO's as bad as the old ones? | Good Sam Community

waexplorer
Explorer
Jan 19, 2023
time2roll wrote:
joebedford wrote:
I have a "crappy" WFCO 68100. It's 11 years old. I have no idea if it goes into bulk mode.

Is that bad?
Have you ever pushed the button?

I have pushed the button to go back to fast charge when my batteries were still low after it stops fast charging in about an hour when were boondocking and using the generator. Mostly I let it do it's thing. The pendant flashes differently for each mode.
Fisherguy
Explorer
Jan 19, 2023
waexplorer wrote:
If your charging amps are above 40 amps I'd say that's ok. Most lithium batteries have BMS's that are 50 amp or 100 amp charge/discharge capable. 55 watts is the max system output including lights, accessories etc. Whatever is left is for charging. If you're not having issues I wouldn't change it yet. You want charge voltage around 14.4 for lithium. If it's 13.6 or so that is for flooded lead acid. Lithium batteries don't have float mode. There are several good youtube videos show lithium charge and discharge curves. Do you have the Zamp 30 amp solar controller above the bed like mine? Make sure it is set to lithium also.

The previous owner told me he changed the charger for one that's compatible with Lithiums and when I slid the charger out I saw "8955Lis200724" on the label and assumed the 'Lis' part of it meant it was the Lithium charger but after doing some more clicking I now don't think it is. It doesn't look like the one on the WFCO site that sposed to be the Lithium conversion:
lithium replacement

I want to get the most bang for my buck when I need to fire up the Honda 2000 to charge the batteries so I'll be looking for something that puts out 75 or 80 amps or something.
Fisherguy
Explorer
Jan 19, 2023
joebedford wrote:
I have a "crappy" WFCO 68100. It's 11 years old. I have no idea if it goes into bulk mode.

Is that bad?

If it's worked for you and haven't had an issue with it don't worry about it.

I have a 12v fridge and only boondock so I want to charge my lithiums as fast as possible when runnung my genny, that's why I started this thread!
MEXICOWANDERER
Explorer
Jan 19, 2023
I think of WHIFFIES in the same light as I do ten-for-a-dollar junk store disposible razors. Yeah. That laughable.
Boon_Docker
Explorer III
Jan 20, 2023
Fisherguy wrote:
waexplorer wrote:
If your charging amps are above 40 amps I'd say that's ok. Most lithium batteries have BMS's that are 50 amp or 100 amp charge/discharge capable. 55 watts is the max system output including lights, accessories etc. Whatever is left is for charging. If you're not having issues I wouldn't change it yet. You want charge voltage around 14.4 for lithium. If it's 13.6 or so that is for flooded lead acid. Lithium batteries don't have float mode. There are several good youtube videos show lithium charge and discharge curves. Do you have the Zamp 30 amp solar controller above the bed like mine? Make sure it is set to lithium also.

The previous owner told me he changed the charger for one that's compatible with Lithiums and when I slid the charger out I saw "8955Lis200724" on the label and assumed the 'Lis' part of it meant it was the Lithium charger but after doing some more clicking I now don't think it is. It doesn't look like the one on the WFCO site that sposed to be the Lithium conversion:
lithium replacement

I want to get the most bang for my buck when I need to fire up the Honda 2000 to charge the batteries so I'll be looking for something that puts out 75 or 80 amps or something.

According to the WFCO website, your "8955Lis200724" is lithium compatible.
Fisherguy
Explorer
Jan 20, 2023
Boon Docker wrote:

According to the WFCO website, your "8955Lis200724" is lithium compatible.

Is it? It doesn;t have the 'lithium switch' so I didn't think so.
I looked at the website and couldn't find anything so I sent there tech support an email.
Thanks Boon Docker.
vermilye
Explorer
Jan 20, 2023
According to their ads, the latest version of the WECO converters "automatically" sense what type of battery is installed, and switch to the appropriate voltages. That said, if they do it like they did with the older converters, I'll believe it when I see it.
Boon_Docker
Explorer III
Jan 20, 2023
Fisherguy wrote:
Boon Docker wrote:

According to the WFCO website, your "8955Lis200724" is lithium compatible.

Is it? It doesn;t have the 'lithium switch' so I didn't think so.
I looked at the website and couldn't find anything so I sent there tech support an email.
Thanks Boon Docker.

You're welcome.
Let us know what the tech has to say.
Fisherguy
Explorer
Jan 21, 2023
Boon Docker wrote:

You're welcome.
Let us know what the tech has to say.

Well I knew it wasn't one of the new "auto detect" models cuz it doesn't have the colored LED's, couldn't find the 'lithium switch' the other ones have and today tech support told me,
"The WF-8955-AD-MBA supersedes the WF-8955LiS-MBA. Both are lithium compatible.
You have a WF-8955LiS-MBA which should have a manual switch to put it in lithium mode. The WF-8955-AD-MBA has an “auto-detect” feature that puts it in lithium mode.
The lithium switch location can vary. I believe I have yours figured out but will verify that next week and get back with you."

I think I'm going to put the WFCO on it's own breaker and add a new 20 amp breaker in the panel, run a 12-3 cable to the pass through and install some kind of higher amp charger there.
That's what I did in our old trailer, used a PD9280 that time.
Thx
Will
Boon_Docker
Explorer III
Jan 21, 2023
Good to hear, saves you some cash.
Thanks for the update.

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