Griffin Technology has announced TuneJuice, a new battery backup device for the iPod and iPod mini. Using a single 9-volt battery, TuneJuice provides up to 8 hours of additional power for any iPod with a Dock Connector port. Griffin said the accessory is the perfect carry-on for airplanes, road trips and ski trips. The Griffin TuneJuice will sell for $19.99. It is scheduled to begin shipping in the first quarter of 2005.