Are all car batteries 12 volts?

1 Answers
RiverLee
07/24/25 7:11am
Generally speaking, car batteries are 12 volts. The batteries used in cars are lead-acid batteries, which consist of six cells connected in series, with each cell having a voltage between 1.7 and 2.1 volts. For household cars, the battery lifespan is typically around 27 months, roughly 2 to 3 years, but the exact lifespan depends on the car's usage conditions. The battery's lifespan is largely determined by the car's driving habits. If the car is frequently driven aggressively, the battery's lifespan will be shortened. There are two types of car batteries: maintenance-free batteries and conventional batteries.
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