DIY an Keychain Emergency Mobile Phone Charger Supper Mini Power Bank

DIY an Keychain Emergency Mobile Phone Charger Supper Mini Power Bank
How to make an Keychain Emergency Mobile Phone Charger at home very simple, verision Supper Mini Power Bank
- I use USB Mobile Power Bank PCB Module, can charge battery with Micro USB And charge Mobile Phone with Port USB 5V-1A
- We can charger is 5-10%, depending on the type of phone

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