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Old 08-30-2016, 12:44 AM   #21
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City: Anchorage/Wrangell
Country: USA
Vessel Name: Silver Bay
Vessel Model: Nordic Tug 42-002
Join Date: Sep 2012
Posts: 482
After running the remainder of June, all of July, and 20 days in August, I can pretty much say the problem was all the parallel relationships between the battery banks. Now the Balmar and Link 2000 agree to within 1-2% and the SOC is consistent with the estimated amps consumed over time. I think the batteries are good, just poorly wired in the beginning. Power on boat is part of a system, not a collection of independent connections.

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Old 08-30-2016, 06:34 AM   #22
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Join Date: Oct 2007
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". Voltage measurements are highly misleading."

Actually the SOC meter compares Voltage and charge/discharge Amperage (thats why the shunt) with a learned history to give a very accurate picture of the SOC.

Modern batt practice is to overcharge LA batts a bit each charge , which will not be recorded.

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