[CES 2012] You know these modern day smartphones. Sure, they might be able to feature boatloads of bells and whistles that lack just the kitchen sink, but their battery life is rare enough to push beyond one day's usage with all the options turned on. The SpareOne phone, on the other hand, takes a far more prudent approach by being the only phone in the world that is powered by a solitary AA battery while being capable of maintaining its charge up to 15 years.
Ubergizmo, SpareOne phone runs on just one AA battery