I just saw this at the AT&T store. iSound 2 in 1 Charger and Back up Battery. It looks liken the Kensington brand. Anyone has one of these and rate the performance?
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Includes: Back Up Battery, USB AC adapter (switching 110-240V),
retractable USB charging cable
Compatible with all iPod models with a 30 pin connector
High capacity 1000mAh Polymerized Lithium-ion battery
Up to 30 hours of additional music, 6 hours of video, 3 hours of talk time
Battery status indicator
USB charging cable can charge iPhone/iPod and battery pack simultaneously
USB AC adapter can charge any iPhone/iPod using an original charge/sync cable
Works with iPhone/iPhone 3G
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Includes: Back Up Battery, USB AC adapter (switching 110-240V),
retractable USB charging cable
Compatible with all iPod models with a 30 pin connector
High capacity 1000mAh Polymerized Lithium-ion battery
Up to 30 hours of additional music, 6 hours of video, 3 hours of talk time
Battery status indicator
USB charging cable can charge iPhone/iPod and battery pack simultaneously
USB AC adapter can charge any iPhone/iPod using an original charge/sync cable
Works with iPhone/iPhone 3G