"ENERGY: Wireless beacon could recharge consumer devices"

Wireless battery technology unveiled at the Consumer Electronics Show by Powercast LLC is destined for a consumer device being readied for release later this year by Philips Electronics N.V. Using the 900-MHz band, Powercast transmists RF energy to a receiver module measuring about half the size of a AAA battery. In beta testing of a wireless sensor network at the Pittsburgh zoo, the Powerharvester receiver module was retrofitted to the battery compartment of a wireless sensor made by Intellisensor (Pittsburgh), extending battery life from under 120 days to several years.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=196900082