The best electric bike conversion kits offer a potentially more affordable route to electric biking. While electric bikes can be expensive, if you already have a suitable bike, an electric bike ...

At all the big Maker Faires, the Power Racing Series makes an appearance, turning old Power Wheels into race cars that whip around the track at dozens of miles an hour. [Charles] is somewhat famous in ...

Dimaag's mobile battery charger has four-wheel drive and four-wheel steering. It has a nearly 300-kilowatt-hour battery. The MWCS can output between 1 and 6 megawatts of power. Heavy machinery like ...