Updated at: 12-11-2021 - By: Lucas

If you had to use a jump start to get your car started recently, this suggests your battery is low and requires some time to replenish. As a result, you should avoid turning off the engine too quickly to avoid having to use a jumpstart again. So, the obvious question is:

After having a jump start, how long should I let my car run before it needs to be repaired or repaired again? Let the automobile run for at least 30 minutes after a jump start before shutting it down. You should be able to start the engine the next time you plug in the battery for 30 minutes to fully recharge it. You’ll need a new one if you turn it off before that time.

An engine jumpstart provides enough power for one shot, but it doesn’t provide long-term results. Leaving the engine running for a few minutes before shutting it off is therefore necessary. There will be no need for a second jump start the next time you start your car’s engine thanks to this method.

We’ll cover all you need to know about getting off the ground in this article. In the aftermath of an accident, you’ll also realize how important it is to keep your car operating for as long as possible. You’ll know what to do if you ever have a dead battery.

Let’s get started, shall we?

How Long to Run a Car After the Jump Start?

After you jumpstart your automobile, you’ll need to leave it running for a time. The reason is because if you don’t, your car’s battery won’t get charged. As a result, you’ll need another kickstart the next time you need to start the engine.

Since the alternator needs to be powered by the car after a jump start, it’s best to let it run. Nonetheless, the alternator will recharge your battery and provide enough power for subsequent ignition.

If you don’t have a jumper, it will take at least 30 minutes to start your car.

In this case, you’ll need another jump-start if you turn off the engine after only a few minutes of jump-starting it.

After a recent jump-start, you must drive or at least let the engine run. In the event that you are already at home and have a car battery charger, you do not need to leave the car running. Once you charge it, you’re ready to go the next time you get behind the wheel.

Must You Drive After Getting a Jump Start or Is Idling Enough?

How Long Should A Car Run After Getting A Jump

After a jumpstart, you have the option of driving or letting the engine idle for a period of time. In order for the alternator to charge the battery for the next start-up, the engine must be running.

There is no difference whether you are driving or simply idling the engine. You can drive it or leave it for at least 30 minutes as long as the engine is running.

As a result of this, the battery may be charged more quickly while driving than if the engine was left to idle.

Let it idle for a time, and you’ll save a lot of gas while also recharging your automobile. On the other hand
Idling your car is a convenient option if you’re at home and don’t plan on going anywhere else.

As a result, if you’re already on your way, you can go on. In order to ensure that the battery has enough juice, you should only let the engine run if you’ll be there in under 30 minutes.

Do Car Batteries Charge While Idling?

Yes, that’s the simplest response. Idling on a car’s battery does charge it. Even if you’re not driving the car, the alternator keeps working as long as the engine is running.
For automobiles, an alternator converts mechanical energy into electrical energy. It is possible to charge the battery even when the engine is idling, because the crankshaft is moving.

Reduce the use of power-consumpting accessories if you wish to charge the battery quickly.

As an example, if you’d like to save money on your electric bill, you may switch off the air conditioning, the stereo, and the lights.

In addition, you may wish to give the alternator a quick burst of power by stepping on the gas a few times.
It’s still possible to just leave the engine running. Idling the automobile while the engine runs may take longer, but it’s acceptable practice.

Does Revving the Engine Charge the Battery?

The battery is charged when the engine is revved, and this is true. As a matter of fact, revving the engine provides the alternator with an additional charge of energy.

The alternator increases the current flow when the engine is revved or the accelerator pedal is pressed. In layman’s words, the alternator spins faster, resulting in a quicker charge for your battery than would be possible with an idle motor.

Keeping the engine revved nonstop wastes fuel since it consumes more when it is always being cranked. A few of pauses on the pedal should be enough to get the job done. However, it isn’t advisable to keep doing it for an extended period of time..


After a successful jumpstart, you should leave your automobile running for at least 30 minutes. Jump starting an automobile indicates that the battery is no longer able to power the engine. The purpose of a jumpstart is to get the engine running so that the battery may be recharged. You’ll need a second jumpstart if you switch it off before the battery is fully charged.

If your battery dies, the alternator can recharge it in 30 minutes, assuring that your car will start the following time. Jumpstarting may be necessary if you turn off the engine too quickly.
Keep the engine running for at least half an hour after you jump start it. As time goes on, the alternator will be able to recharge the battery.