A compact and practical enclosure for your own 18650-based powerbank.
Built with affordable components and a clean, functional design.
🔧 Features:
- Securely holds a standard 18650 battery (65 - 69mm standard or protected)
- Designed to fit common, low-cost USB charging modules (~1 EUR on AliExpress)
- Tube-style body keeps everything neat and protected
- Screw-on lid for secure closure and easy access
- LED indicator holes to monitor charging and power status
- Intuitive assembly – easy to build, no chance of putting parts in the wrong way
- Requires a bit of soldering for connections — great as a beginner electronics project
Whether you're a maker, student, or just need a backup power source, this design gives you a solid, low-cost DIY powerbank that’s fun to build and easy to use.
🖨️ Print Settings:
- Nozzle: 0.4 mm
- Layer height: 0.16 mm (optimal)
- Supports: Not required
- Tested: with several different PLA's and Bambulab X1C and A1
🧩Components:
🧰 Assembly Instructions
Cable soldering – important:
- Connect the red wire to the USB-C side
- Connect the black wire to the USB-A side
Insert the battery holder first into the tube — make sure the plus (+) side goes in first (follow the arrow on the case).
There’s enough room to insert the charging module and battery holder with the connected wires into the tube.
🧠 Tip: If it doesn’t slide in easily, don’t force it — double-check your cable routing and solder joints.
i-BoxIt
