Not all cars are meant to be driven every day. If you own a special vehicle, such as a classic or sports car, you probably keep it tucked away somewhere until you're in the mood to take it for a spin.

View post: Walmart's Magnetic Phone Car Charger Is Now on Sale for Just $14, and It 'Works Perfectly' Powered by a 6A lithium battery of its own, the 12V smart charger is controlled using a built-in ...

It seems ridiculous, but even electric vehicles, plug-in hybrids, and hybrids that carry big powerful high-voltage batteries also require a 12-volt battery. And certain usage patterns can end up ...