It becomes like this when you can attach the USB port directly to the AA battery and make it chargeable

Is not it an AA battery, or if you directly attach a USB port to the so-called "battery" and let the USB charging cable get caught in a different way can it be changed differently? Although it is a very simple idea of ​​being a real idea, if the concept is actually shown graphically in front of you, reality will come and it will become easier to image.

Continuance - Rechargeable Battery with USB Interface by Haimo Bao, Hailong Piao, Yuancheng Liu & Xiameng Hu Yanko Design

In this way the batteries used here and there

Let's attach a USB port to that side like this.

It can also be used for charging mobile phones, very compact

Good packing atmosphere and design like this

in Design, Posted by darkhorse