All car batteries lose power over time. This isn’t a factor when the car is driven regularly, allowing the alternator to replenish the battery. But if the car is parked for an extended period ...

Follow this step-by-step guide to using jumper cablesBy Jeff S. BartlettEvery drive begins with a 12-volt battery starting ...

Larger portable ... a car's power outlet, are now on the market. These devices, which cost between $20 and $50, do not instantly start your car. They take 5 to 10 minutes to charge your battery ...