A new startup company plans to unveil a fuel cell device at CES 2006 that could power mobile devices for days...and possibly even weeks based on usage:

The power pack is made up of two parts: a disposable fuel cell component and connector cable. The fuel cell, which measures 3.2 by 2 by 1.4 inches, will provide the raw power while the connector cable will interface between it and the gadget being charged. Cables for different gadgets, fitted with the correct charging connector and voltage regulator, will be available, said Michelle Rush, a spokesperson for the company.

This news article was written on December 18, 2005, quoting PC World.