Battery & Charging System
Open-circuit voltage and charging system reference for 12V flooded lead-acid batteries. Voltages measured at rest, no load, at least 4 hours after charging or driving.
Open-Circuit Voltage ↔ State of Charge (12V flooded lead-acid)
| Voltage | State of Charge | Specific Gravity |
|---|---|---|
| 12.65 V or higher | 100% (fully charged) | 1.265 |
| 12.45 V | 75% | 1.225 |
| 12.24 V | 50% | 1.190 |
| 12.06 V | 25% | 1.155 |