A "12 volt battery" nominally contains 12 volts; however, the actual voltage can vary.
Based on the provided reference, when discussing car battery voltage, we're generally talking about a 12-volt battery. However, car battery voltage can range from 12.6 to 14.4 volts. When the engine is off, a fully charged car battery will measure 12.6 volts.
| Condition | Voltage (Volts) |
|---|---|
| Fully Charged (Engine Off) | 12.6 |
| Range While Charging | 12.6 - 14.4 |
