Hi, Someone told me that a company called Photojojo has just recently developed a new tiny battery charger for the iPhone that fits on a key chain. Apparently, it's small enough to fit on a keyring [which everyone uses and carries with them] and charges about 30 or 40 percent of the battery. Has anyone heard of this or tried it? I love the idea but I'm just not sure about it's feasibility. I guess it wouldn't give as much power as a Mophie; but, it would mean we wouldn't need a giant battery case on our phones if we just need a boost in power to get through a day, and I'm amazed every single time I take the phone out of the battery case at how thin and sleek it is.