U disk, rechargeable battery seems to be irrelevant, but if these two small things that are essential in daily life are combined into one, is it convenient?
The concept design proposed by Wonchul Hwang is quite creative. When it is plugged into a computer, it can be used as a normal USB flash drive, and it can also charge the internal battery module in the dark. If you encounter a digital camera, camcorder, flashlight, radio, etc., the battery is exhausted, twist it into a 5A AA battery, and there are three LED power indicators on the side. Maybe we can call it "AA USB".
If someone can convert it into an actual product, I believe it will be welcomed by many digital people. Of course, there are still many problems to be solved, especially the internal structure of the battery and the U disk. I first saw the action of Twist USB, thinking that the battery can convert kinetic energy into electrical energy. After reading the small words, I realized that I just twisted the battery from the U disk.
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