How long can a car sit before the battery dies?

1 Answers
Tyrone
07/30/25 1:36am
If a car sits for more than three months, the battery will die. Reasons for battery discharge over time: Automotive batteries are primarily starting-type lead-acid batteries. All batteries share one characteristic: self-discharge. This means even when the car battery isn't connected to any electrical components or under any load, it will gradually lose charge. Of course, the rate of discharge depends somewhat on the battery's manufacturing quality. Measures to prevent battery discharge: To avoid battery drain in long-term parked vehicles, the best practice is to start the engine periodically, allowing the car's alternator to recharge the battery. If the battery is in good condition, starting the car about every two weeks and running it at around 2,000 RPM for approximately half an hour should be sufficient to replenish the self-discharged power.
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