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Post by tiredude on Nov 5, 2023 9:51:23 GMT -5
I have a KZ Venom toyhauler. It came with a xantrex 125 ah lithium battery and a wfco deck mount converter 9855 ad. Plugged in the rv for a week. When i left battery was at 53% and charging. Went to check on it 5 days later and battery was at 45% and not charging. Converter was on but in lead acid mode. Green light on inside the converter. Unplugged it and plugged back in and started charging again. Stayed for a few hours and all seems ok except for the lead acid mode. Any thoughts on why it would stop charging? I am plugged into 30 amp shore power btw.
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Post by wahoo on Nov 5, 2023 10:49:23 GMT -5
My Escalade has a WFCO 9865 from the factory with a standard deep cycle lead acid battery. I have a group 31 AGM from my boat I am not using so I called WFCO three days ago. Their statement was: "The 98xx series will handle lead acid and agm batteries with no issues but should not be used with a lithium battery". The inference I got was there is no battery management interface smarts in the 98xx. It is interesting in that AGMs require a slightly higher voltage for 100% charge than either lead acid or lithium but those are words from the factory. That and $5 will get you a latte:) IMHO, you should change the battery or the converter. Good luck either way!
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Post by tiredude on Nov 5, 2023 11:28:36 GMT -5
Thank you for responding wahoo. The wfco AD is supposed to Auto Detect lead or lithium and charge accordingly. Not very well apparently.
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Post by wahoo on Nov 7, 2023 12:02:08 GMT -5
Cool, I missed the AD designation and had the 98xx conversation on my mind. Sounds like good stuff if it works, sorry you are having issues.
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Post by tiredude on Nov 12, 2023 7:20:32 GMT -5
Watched a utube video from wfco about getting the converter into lithium mode. I let the battery get down to 0 and followed the instructions. It worked! My converter is in lithium mode and charged the battery very quick. Hope it stays in the correct mode now.
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