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Old 07-19-2021, 04:05 PM   #1
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Question Victron SmartBMV battery monitor resetting to 100%!

When my two 100Ah Battle Born batteries in my RV reach 30% SOC, I charge them up with my 2000W generator. However, when I begin the charge, the BMV 712 immediately reads 100% SOC on my phone. Why? Shouldn’t it start counting up from 30% SOC to 100% SOC as the charge cycle progresses??

Thank you!

FYI: After a full charge I have tried setting the “State-of-Charge” to 100%, as well as “Synchronize SOC to 100%”, and tried both on and off for the “Battery Starts Synchronized.” No joy.
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Old 07-19-2021, 04:15 PM   #2
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Have you set the parameters on the 712 to lithium?

Here are instructions from the manual. Not sure if it will help.

The BMV synchronises too early
In solar systems or other applications with fluctuating charge currents, the
following measures can be taken to reduce the probability for the BMV to
reset prematurely to 100 % state of charge:
a) Increase the “charged” voltage to only slightly below the absorption charge voltage (for
example: 14.2 V in case of 14.4 V absorption voltage).
b) Increase the “charged” detection time and/or decrease the tail current to prevent an
early reset due to to passing clouds.
See section 4.2.1 for set up instructions.
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2006 Damon Daybreak 3276 35'with 5 Star Tuner. 3 200 Amp Lithium batteries and 2000 watt PSW inverter/charger. 2013 Elantra on a Master Tow dolly.
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Old 07-19-2021, 05:19 PM   #3
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Angry

Thanks Harry -- I've already tried these settings with no joy!
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Old 07-19-2021, 07:50 PM   #4
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I think you need to call them then.
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