Korean company named Wigobyte has developed a USB thumb drive that also doubles as an emergency cell phone battery. The Mvolt-200 comes in capacities anywhere from 128MB up to 1GB and is USB 2.0 high-speed compatible. Not only that, but it can deliver about 40 min of emergency talk time and 10 hours of stand-by time depending on which phone you own.
The connector complies with Korean TTA standard 2400s 24Pins. The device measures 56.6×26.1×14.1mm and weighs in at 17g.