If you want extra juice for your iPhone, there aren't that many options out there that don't look rather goofy. They're bulky, corded, or just plain ugly. But the PhoneSuit battery is a nice cange—only 17 mm thick.
The PhoneSuit Elite claims it'll double your iPhone 4's life with its 2100mah lithium-ion polymer, and charges to the top in less than two hours. Not too bad, if true! Still, any phone purist will scoff at the notion of adding any extra flesh to their cell. [PhoneSuit via Ubergizmo]