On Friday a company called Medis Technologies Ltd. announced it had sold an unspecified amount of its fuel cell chargers to Microsoft, but offered no further details. 

Media reports appeared soon afterward, speculating that the chargers may be intended for re-sale by Microsoft to accompany its Zune portable media device. 

The Microsoft spokeswoman said only that a "small amount" of the chargers was purchased, to be distributed for free at an upcoming event. Microsoft is "not planning to sell them to consumers," the spokeswoman said.