Open-Circuit Voltage SoC Lookup
Battery State of Charge Calculator
Determine exact State of Charge (SoC %) and health status by measuring resting open-circuit voltage at terminals.
Voltage Measurement
Enter measured resting DC voltage after 1 hour with no load or charging.
State of Charge (SoC)
70 %
Healthy Charge Range
Full Charge Voltage (100%):
13.6 V DC
50% Charge Voltage:
13.1 V DC
0% Cutoff Voltage:
10.0 V DC