In this video, I show how to build a DIY power bank using recycled lithium-ion batteries from disposable vape devices.
Millions of disposable vapes are thrown away every year, even though the batteries inside them are still usable. In this project, I recovered these batteries and reused them to create a compact and portable power bank.
The batteries (3.7V Li-ion) are connected in parallel to increase capacity, and a 134N3P boost converter module is used to convert the battery voltage to a stable 5V USB output for charging devices like smartphones.
I also designed a custom 3D printed battery holder and enclosure to make the assembly easier, safer, and more compact.
🔧 Components used:
- Recovered 3.7V Li-ion vape batteries (~300mAh each)
- 134N3P boost converter & charging module (5V output)
https://s.click.aliexpress.com/e/_c3dUN2PF
https://s.click.aliexpress.com/e/_c3rquNYZ - 3D printed case and battery holder
- Wires
- USB cable (Type-A / Type-C)
- Soldering tools
⚡ Features:
- 5V USB output for charging phones
- Portable and compact design
- Made from recycled electronic components
📥 You can download the 3D printing files and full project details (Microsoft Word file) from the link below:
https://makerworld.com/models/2622934?appSharePlatform=copy
⚠️ Important:
Make sure all batteries are connected in parallel and have similar voltage levels before connecting. Always be careful when working with lithium-ion batteries.
This project is perfect for DIY lovers, electronics beginners, and anyone interested in recycling and 3D printing.
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