Japan Trust Technology announced an external 6000mAh lithium-ion battery pack to make sure your iPod can keep going and going. It gives you power for about 50 hours of extra playing time. It connects via the standard iPod port and fits the iPod 4G, the U2, color, Photo, mini and nano. It weighs just over 6 ounces and the size is about 3.2 x 2.2 x 0.9 inches. It will be available in stores in Japan starting December 16th, 2005 for $66.