A 6V car battery, when fully charged, will read slightly over 6V.
While designated as "6V," a fully charged 6V battery will typically measure slightly higher than 6 volts when tested with a multimeter. According to the references, a 6V charger is usually designed to output around 7 volts to achieve a full charge in the battery.
Here's a table summarizing the approximate voltages:
| Battery Designation | Voltage During Charging | Fully Charged Voltage |
|---|---|---|
| 6V | ~7V | Slightly over 6V |
Therefore, the actual voltage of a "6V" car battery will vary depending on its state of charge. During charging it can be around 7 volts, and when fully charged, it will read a little over 6V.
