Thread: State of Charge
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Old 06-24-2017, 07:00 AM   #7
angus99
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City: Signal Mtn., TN
Vessel Name: Stella Maris
Vessel Model: Defever 44
Join Date: Feb 2012
Posts: 2,742
Thanks for all the ideas.

I've gone over the manual (my head hurts) and have a few things to check out when I'm back at the boat this morning. I upped the absorb time from 3.0 to 3.5 hours yesterday; this is actually higher than US Battery recommends, so I'll likely return it today. I also moved the absorb/float charging voltages to the higher range of what US Battery recommends for these AGMs; we'll see if that made a difference. (I did an equalization charge about a month ago, but maybe it's time for another. Also, I do not find a reset SOC function.)

Another thing I noticed was the SOC is set at 50%. If I read the manual correctly, you can either bring the bank to full charge using time or SOC parameters. Not sure how or why it's set so low, but it sure sounds suspicious. I'll move it to 100% today and see if that helps.

(The manual is well-written and comprehensive, but it would help to have a EE degree to get through it.)
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