What's the difference between a parallel, series, and plug-in hybrid, and why do you need to know? Everything about the technology and the vehicles for the shopper or the merely curious.

A car can sometimes run without a battery after it’s already started because the alternator supplies power. But the battery also stabilizes voltage, so modern cars can suffer spikes, module damage, or ...

High-voltage batteries are expensive to replace. Here's what to know if you're wondering how long yours will last.