Backup Battery for iPhone / iPod – DX001
Someone needs to make a messenger/laptop bag with an integrated charger in it that can charge USB devices when plugged in and also on the go (using a larger battery)
blackrimglasses.com
Someone needs to make a messenger/laptop bag with an integrated charger in it that can charge USB devices when plugged in and also on the go (using a larger battery)
Is this what you’re looking for?
http://www.voltaicsystems.com
It’s a bag with a solar panel and built-in battery that can charge any number of devices. I haven’t used one, so I can’t comment on how well it works.