At what voltage is a 12V battery considered discharged?

1 Answers
HoldenAnn
07/29/25 12:47pm
12V battery is considered discharged at 10.8 volts. The voltage level of the battery directly affects the car's starting. If the car is difficult to start or fails to start, it is likely due to low voltage. If the battery is damaged, it might be because of excessive voltage. Therefore, if the car cannot start, it may be due to the voltage dropping below 10.8V, at which point the battery needs to be charged with a charger. If the battery frequently discharges, it is recommended to replace the battery. The common causes of battery discharge in cars are forgetting to charge after parking or faults in the generator or the battery itself. Proper usage is essential to extend the battery's lifespan.
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