An alternator is a generator that produces the electricity stored in a vehicle’s 12-volt battery and powers the starter motor for the engine and the various computers, lights, power windows and locks, ...

For most riders, bicycle lighting consists of an array of LED lamps and flashing gizmos, usually powered by lithium-ion batteries, or coin cells for the smaller ones. Some people though prefer to ...

Have you ever wondered about the electricity that courses through your car? Do you suspect that there's a captive bolt of lightning held in a magic jar? Of course you don't. You're not a Neanderthal.