CrunchDeals: Energizer iPhone/iPod ‘Energi to Go’ emergency battery for $10
The Energi to Go uses two AA batteries and can fully charge an iPhone in 2 to 3 hours – it’ll charge any dockable iPod as well, with smaller iPods getting multiple charges before the batteries need to be replaced.
Energizer Energi To Go Battery Charger [Buy.com via dealnews]