“So that is now my question -- for those of you who are fans of Victron-type monitors, how do you deal with the problem of AHDS ("Amp/hour dwindle syndrome")?”
You’re being distracted by a clever marketing tactic which glosses over the weakness inherent with the Smartgauge voltage-tap only meter design (what’s their fairy dust??) …You’ll find no more accurate a meter than a shunt based meter, and since you have FWC batteries, a budget meter should easily do the job (an even more sophisticated meter req’d for LFP), this with zero problems tracking SOC - and if you’re of the persuasion that the batts capacity decline will result in a perceptible inaccuracy over a time, then just simply re-program to a slightly lower capacity in a few years…But after about 14 yrs of measuring my former FLA SOC’s with a shunt based Xantrex LinkLite meter I have some difficulty relating to your perceived concern…However, I might well agree if we were talking about something like the Mars Rover :)
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