Maast
Compulsive Tinkerer
Voltage is a terrible way to keep track of SOC unless you're already deep into the 'knees' and if thats what you're trying to avoid its already too late.
I suppose if you had a really LARGE bank the inputs and outputs would still keep the C rate low enough its would be sorta accurate without the readout voltage being jerked around by charging/discharging. Something like 1000ah for 100a charge/discharges would be my guess.
I know that even with my current bank of FAIMM FLX 500s AGMs I never know when they're actually full unless I let them sit for a few hours but they never actually sit without something going on for more than a few mins. With a LFP bank I imagine it'll be even worse with their flat charge/discharge curves.
IMO AH counting is better, but not by much and would need continual recalibration on both the high and low end.
I''d love to see a SOC meter that uses amperage acceptance to actually know when full is actually 'full' but I havent seen one and I dont think they exist.
Anybody know of one?
I suppose if you had a really LARGE bank the inputs and outputs would still keep the C rate low enough its would be sorta accurate without the readout voltage being jerked around by charging/discharging. Something like 1000ah for 100a charge/discharges would be my guess.
I know that even with my current bank of FAIMM FLX 500s AGMs I never know when they're actually full unless I let them sit for a few hours but they never actually sit without something going on for more than a few mins. With a LFP bank I imagine it'll be even worse with their flat charge/discharge curves.
IMO AH counting is better, but not by much and would need continual recalibration on both the high and low end.
I''d love to see a SOC meter that uses amperage acceptance to actually know when full is actually 'full' but I havent seen one and I dont think they exist.
Anybody know of one?
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