This is where the Kickstarter project known as Fuel comes in, where it is touted to be the smallest cellphone charger in the world when realized. Devotec is the company behind its design, where Fuel would measure a mere 1” in height, and approximately 0.5” wide. This makes it tiny enough to fit onto a keychain or in a small pocket, but there is one potential drawback – its battery life, no thanks to its size. Fuel is meant to be a real emergency life saver, where it helps you run your smartphone for another 20 minutes to half an hour just in case of an emergency, which ain’t too shabby, actually, thanks to its 5C lithium-ion 220mAh rated battery.