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 ...

Want to extend your car battery's lifespan? Switch off accessories, avoid long stationary periods, and protect your battery ...

Working on car electrical systems used to be easy. The battery simply provided power for the car’s starter motor when starting or to run the small number of accessories when the engine wasn’t running.

A weak battery rarely announces itself. One day the car starts fine, the next, just a click and silence. Most battery ...