The first functioning electric motor was displayed in the early 19th century, though the device constructed by British scientist Michael Faraday did little more than swirl a wire around a magnet when an electric charge was introduced. Still, the concept proved that electricity could do work. Functional electric motors would follow in many forms after that achievement in 1821. Soon scientists and tinkerers around the world, including visionaries such as Nikola Tesla, were experimenting with all manner of electric motors -- some worked with DC power, others with AC. By the end of the century, myriad electric motors had been produced, capable of exerting enough force with enough reliable control that they were practical for use in myriad applications.
4. How to Enter: The Sweepstakes must be entered by submitting an entry using the online form provided on this site. The entry must fulfill all sweepstakes requirements, as specified, to be eligible to win a prize. Entries that are not complete or do not adhere to the rules or specifications may be disqualified at the sole discretion of Electric Bike Technologies LLC. You may enter only once daily and you must fill in the information requested. You may not enter more times than indicated by using multiple e-mail addresses, identities or devices in an attempt to circumvent the rules. If you use fraudulent methods or otherwise attempt to circumvent the rules your submission may be removed from eligibility at the sole discretion of Electric Bike Technologies LLC.

For many bikes, battery range is more important that total power (because they're all pretty powerful). You want a bike that delivers a range long enough for your rides at the power levels you want. Most e-bikes will have three to five levels of assist kicking in anywhere from 25 percent of you pedal power to 200 percent boost. Consider how fast the battery takes to recharge, especially if you'll be using your bike for long commutes.