There’s only one way to answer the question, “Is it my battery, or something else” when your car won’t start: Hook up the best car battery tester and get a readout of what’s going on.

GREENSBORO, N.C. — The cold weather drains your car battery. It can leave you stranded ... You might think you're helping your car warm up by revving the engine, but Olsen says you're asking ...

But when the battery is old and past its service life, that won’t work, and it’s time for a car battery replacement ... Lift the hold-down strap up and out of the way and set it aside.

Times have changed. Portable jump starters are now readily available, and they're a great way to bring your car’s battery back to life without a donor vehicle to hook up to. Portable jump ...

You’re supposed to hook up your own rechargeable LiPo battery, but [PatH] was in a hurry. Instead, a USB battery pack was pressed into service, but it kept shutting down. The simple trick was to ...