Battery charge level

[LK23]

What is the best method of determining the charge level of my house batteries. The PowerLine energy management system will display the voltage. What is the normal range and at what voltage are the batteries considered discharged?

Is there a better way to determine charge level?

LK23

[LK23]

What is the best method of determining the charge level of my house batteries. The PowerLine energy management system will display the voltage. What is the normal range and at what voltage are the batteries considered discharged?

Is there a better way to determine charge level?

LK23

[Clay L]

Hopefully you can decipher the following.
For the first set of numbers: 12.8 matches 1), 100% matches 2), 0% matches 3), and so forth.

The info comes from: http://www.batteryfaq.org

1)Digital Voltmeter Open Circuit Voltage at Rest
2) Approximate State-of-Charge at 80?F (26.7?C)
3) Approximate Depth-of-Discharge at 80?F (26.7?

12.8
100%
0%

12.6
75%
25%

12.4
50%
50%

12.0
25%
75%

11.8 or less
DISCHARGED
100%