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Old 03-04-2013, 10:33 AM   #7 (permalink)
Master EcoModder
Join Date: Nov 2008
Location: Massachusetts, USA
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The best way is use both voltage and AH counter. Just make sure that 10.5v (under load) is considered "dead" when using a volt meter.

I had a PakTrakr to monitor my lead acid pack and while it had a built in State of Charge meter, I usually used Voltage and made a cheat sheet of different SoC and their corresponding voltages.
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