APC's Mobile Power Pack delivers juice via USB
list of accessories able to provide your portable gadgets with precious extra hours of runtime. Promising up to 55 more hours of juice for your iPod nano or eight to ten hours for your Treo, the MPP UPB10 sports a high-capacity, user-replaceable lithium polymer battery that can power and charge nearly any device with a USB or mini-USB jack. If you don't have the time/inclination to build your own solution, this may be seventy bucks well spent.
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