Yes. If the battery is completely dead, it won't jump start. Therefore, you will be required to replace the car battery. How long do I leave my car running after jump starting? Once you jump start ...

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Coincidentally, when I turned the key in the ignition of my car ... starter to turn over, so you don’t really need a huge battery—5 amp-hours is often sufficient. Trevor Raab For the jumper ...

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A dead battery on your phone can be inconvenient ... The TYPE S has a built-in 8,000mAh power bank that you can use to jump-start a car battery or charge a variety of mobile devices.

The dead electric car must not be plugged into a charger when you ... Nissan advises owners of the Leaf not to use it as a booster vehicle, as its battery can't supply enough power to jump-start ...

Inability to Jump Start: If the battery is completely dead, attempting to jump-start the vehicle may not be effective. Jump-starting is typically successful when the battery has some charge left ...