meridian
Guru
Any rule of thumb I can use to estimate the decline of stored amps over time? I cruise full time and at anchor most of the time. I don't have the option to let my batteries sit to get a true voltage reading. I have 4 6v for a total of 440 amps 18 months ago. I measure usage with a Victron meter which measures amps used and replaced via a shunt. I never discharge below 80%. My SOC is based on the original 440 amps but what might that be now?