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DIY powerbank
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this powerbank offer up to 4 16850 battery to charge any USB device
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Model information
- Source
- Printables
- Category
- Portable Devices
- License
- Creative Commons — Attribution — Noncommercial
4 18650, 2 battery cases, a charge module and some wire and you can have a 40 000 mAh easyly.
the PCB case must be adapted to the charge module. so I added the 3D sources