Keeping one in your car's trunk means you don't have to rely on a passing traveler with a pair of jumper cables.

Austin-Travis County EMS Community Health Captain Amber Price, left, and Commander Tim Fuentes use a command truck to jump a dead car battery while visiting an encampment near Ben White Boulevard ...

If you need to charge your car's battery and you don't have a charger, don't panic. There are several ways to charge it that don't involve one.

You usually won't need to go so far as to actually start your engine; simply connecting your car's electrical system to a booster pack or another car with a good battery should allow you to pop ...

If you can't get your modern car unlocked, it's possible you have a dead battery. But you might actually have a dead key fob instead, which can be just as frustrating.

3. Try to Start the Car with a Dead Key Fob If you’re inside the vehicle but your car won’t start because the key fob battery is dead, don’t assume you’re stuck.