Mophie's juice pack air external case added some much-needed longevity to our iPhone when we tried it out last year, but most of us on staff aren't particularly fond of making our gadgets even more chubby. If you are also not looking for a little more to love, mophie is introducing a line of external juice packs that pop into your device (courtesy of a retractable dock connector) to add a little extra life. Smallest will be the $40, 1,000mAh juice pack reserve, followed by the $60, 1,500mAh boost, both of which are compatible with the iPod and iPhone -- and also offer "super-bright" LED flashlights. Last but not least is the juice pack power station, which hasn't been given a price or specific mAh rating but is said to add in compatibility with the iPad. The first two are available now and, while it's a shame these things don't just offer a plain 'ol USB port as well for charging other devices, we suppose you can't have everything.
Update: If this is a little too rich for your blood, check out the comments for a few less expensive and more broadly compatible alternatives.