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Victron controller allowing battery to absorb to14.7v

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wntrhwk

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Jan 8, 2020
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I have a 100|30 controller and a 50amph LIFEPO4 battery (test battery, 100amph on the way). I have controller set to the Smart Lithium (LIFEPO4) setting. As you can see from the image, the battery voltage is reaching 14.7v during absorb phase. What am i doing wrong / missing here? Thx for the help.
 

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In the settings what voltage have you set? 12 or 24v also rotary switch position should say 7
 

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You may need to double check that you actually have it set to lithium. My Victron 12v charger shows 14.7v as their "normal" battery charge voltage, not lithium. I believe Victron's lithium setting shows 14.2v. Also, check to make sure you didn't inadvertently use the custom settings.
 
Will do, thx for the reply. Pretty sure when I was on that page I saw 14.2 absorb, been wrong before. Appreciate the help.
 
Well just returned (RV in storage) and you were correct, was set to "user defined", but the values were the same as the Lithium settings, 14.2 ab and 13.5 float. Are there other settings I am missing?
 
If you still have it set up for lead acid batteries, there is temperature compensation. This should be off for lithiums.
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This is located on the SCC in Settings>Battery>Voltage Compensation and set to 0.

EDIT: This would need to be way off to cause the voltage to drift by .5 volts.
 
Last edited:
Chrisski, I believe "Voltage Compensation" was greyed out and I already changed it to "LIFEPO4". I am going back to the RV tomorrow, will have plenty of Solar, will see where the absorb value is sitting. Thx for the suggestion.
 
Set to "Lithium" it was hitting all the numbers. There must have been a left over setting from when I had AGM's. Anyway, thanks for the help.
 
Here’s my settings that work on my 24 volt pack.

660433F5-3BC7-45B4-AB54-DD8F6969DD58.pngD124BE1D-87EE-4573-BE71-34D82383DB5A.jpeg
If you have this, it should work.
 
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