Battery Technology Battery Extender II for iPod 3G, 4G; iPod mini (White)

The IPODB02 is a 40 hour iPod Battery Pack for 3rd and 4th generation IPOD. and Ipod and Mini. Rechargeable Lithuim Ion battery ( charger included ) for all iPods with dock connectors The lithium ion battery can be charged an average 400 times and at up to 40 hours per charge. That\'s 16,000 hours of music play time or download time and will send power directly to the Ipod without charging the internal battery. Belt clip attachment (used with the iPod and BTI\'s iPod Battery ii or with just the iPod by itself) One Year Warranty (Amazon)