However, this can vary slightly depending on:
* Battery age and condition: A new battery will have a higher voltage than an older one.
* Ambient temperature: Cold temperatures can lower the battery voltage.
* Battery type: Different types of car batteries (lead-acid, AGM, lithium-ion) might have slightly different resting voltages.
It's important to note that 12.6 volts is the ideal resting voltage of a fully charged battery. If your battery reads significantly lower, it might be a sign of a problem.