Just when you think you had seen it all, along comes the Minicar battery GT5200. This interesting gadget is actually a lithium-ion battery pack that can charge any gadget with a microUSB port. It was created by Japan Trust Technologies, a company that is also responsible for a night vision camera that fits onto a key chain.
The roof of the Minicar battery GT5200 shows your gadget's current battery percentage and the lights of the car flash on and off during charging. JTT estimates that it will be able to provide anywhere between 300 and 500 charges -- it also sticks onto the back of your device. The Minicar battery GT5200 is set to be sold for around $40.