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 ...

We earn commissions from purchases you make using links in our articles. Learn more. The alternator is a device that keeps your car’s electrical system running once the engine is on. It’s essentially ...

The battery stores the electrical current that your vehicle uses to start and passes electricity along to the parts of your vehicle that need it to function, such as the ignition system, lights, radio ...

Even after changing out the battery and alternator at a neighborhood shop, the truck’s battery continued to fail. Something’s afoot with the other components involved in the system that charges the ...

Production cars began using alternators in the 1960s. As part of the electrical system, alternators made it possible for cars to use higher voltage, and led the way to the modern car charging system.