With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Tell us about yourself!
I found a similar USB module on amazon. It looks extremely different but does the same exact thing. The mini USB port is used to charge the power bank and the full size usb is used to charge devices with the power bank.https://www.amazon.com/Yeeco-Ultra-small-Efficiency-Converter-Charging/dp/B00RWWYGCC/
Where can I buy that USB step up board? None of the ones I can find have a charging port for the batteries.
Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!
© 2016 Autodesk, Inc.