In Reply to: battery education in need posted by Don B. on February 20, 2017 at 12:52:25:
Voltage is only part of the information. to tell the state of charge your could use a battery hydrometer, or a load tester. A load tester checks the voltage and when you apply a load to the battery, how well the battery will hold up to the load being applied to it.
A hydrmeter checks each cell for its state of charge.