Battery problems rarely arrive out of nowhere. Long before a car refuses to start or a phone dies at 20 percent, small changes in behavior reveal that the power source is struggling. I look for those ...

Shopping for a car battery? Read about types, features, and other must-know topics in our car battery buying guide to make an ...

You try to turn on your car, and it just won’t start. Maybe the dashboard doesn’t even light up. A likely cause: The 12-volt battery is dead. All cars lose a little battery power when parked. If you ...