Few would argue against the many benefits of pedal power, whether the health, commuting, economy, or simply the fun that bicycles provide. However, many would-be enthusiasts find themselves in need of or preferring a little assistance. In most cases, this comes in the form of 250 to 750 W motors powered by lithium batteries. Electric motors can give you just enough help to avoid arriving at your destination sweaty and tired. Electric motors can boost top speed, usually to just under 30 mph. And if you have more enthusiasm than energy, an electric bike allows you to keep up with more exuberant riders without risking exhaustion or injury. Bicycles with electric motors have been around for many years, but in the last few years, we've seen several developments that are making them more usable, more practical, and more enjoyable.
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