Jumper cables were once the only option for a dead car battery. Portable jump starters promise a simpler solution, but there ...

You're running late, your car won't start, and you're standing there with jumper cables and a charger wondering –– do I have to disconnect the battery before I juice it up? The short answer is no, you ...

Jump-starting a car means transferring current from a live battery to a dead battery by creating a circuit to charge the battery. After jumping a car, it’s important to keeping it running for a while.