A simple and practical power bank. If you don’t have strong requirements for fast charging, you can use this kind of power bank. It is easy to design, quick to make, and easy to weld. It meets daily practicality. It can also reach 1WmAh with a high-capacity battery. The cost is super low, 10 yuan. within
For the sake of aesthetics, the dual USB outputs are symmetrical with 3 USB micro USB inputs and type C inputs. I made a redundant board as a cover and attached table and stool foot stickers as cushioning. You can draw some logos or interface descriptions on the reverse side when designing the PCB. Improve beauty and recognition.
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