Originally Posted by Moonstruck
It kinda goes with my philosophy of never passing up a chance to pee, and never trusting a fart.
There's a third one, but I guess in some cases it no longer applies.
ksanders, I agree with you. If you have a batt monitor, the voltage is usually irrelevant and often misleading. On my boat at anchor, I have very little load on the batts throughout the night ...normally just a small GPS and an LED anchor light. For years, all I had to refer to was a voltmeter. Even now, my first action when getting out of bed is to compare house voltage with % SOC. If I saw a great divergence from the table (which I have printed and laminated at my lower helm), I'd know something is going south. My second action is to start the coffee on the inverter!!
I posted the chart to help answer his original question and give an idea of the % SOC voltages at rest. I missed his AGM comment and posted the lead acid voltages which are incorrect for AGM batts.