7 Results for

battery-free

Article

Battery-free flashlight among Google Science Fair winners

Teens invent a warning system for approaching ambulances, banana peel bioplastics, and flu drug modeling.

By September 24, 2013

Article

Samsung offers extended-life battery free with Galaxy Nexus

The phone maker is throwing in a free bundle with a longer-life battery and cover to protect it.

By March 27, 2012

Article

Battery-free LED flashlight recharges in 90 seconds

At $169.99, Light for Life is one of the most expensive flashlights out there, but it's also one of the greenest. It charges up in a minute and a half, gives you up to 90 minutes of light, and can be recharged more than 50,000 times.

By June 17, 2009

Article

A battery-free remote control

Prototype relies on kinetic energy.

By June 9, 2008

Article

iSimple MegaPhone: The best low-tech iPhone speaker booster?

The iSimple MegaPhone is a battery-free solution to augmenting the sound of your iPhone speakers. Does it work?

By January 11, 2012

Article

Could nanotech create speech-powered phones?

Research could pave the way for battery-free gadgets that harness sound waves for power.

By December 3, 2008

Editors' Take

Sonnet PodFreq

If you're tired of buying FM transmitters that cut in and out and deliver horrible sound quality, Sonnet offers you a product that might be of interest: a battery-free FM transmitter that--gasp--works!

By January 6, 2006