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  • Charging and discharging

  • Power bank

  • Protection board

Homemade power bank
Print Profile(1)
  • 0.2 mm layer height, 2‑wall walls, 15% infill density

    1-disc

    PLA

    Designer

0

1

4

0

Released 2026-05-06
Details
Files(1)
Makes & Comments (0)

Need two M3×10 screws

One charge/discharge protection board (just search “5V 3.1A single-cell USB-C port” on Taobao to find a suitable one)

Two 18650 batteries

 

First, use a spot welder to connect the two 18650 cells in parallel, then solder their positive and negative terminals to the corresponding terminals on the protection board

The installation sequence is shown in the detailed diagram

Bill of materials

  • Name
    Quantity
    Notes
  • 1
    M3*10螺丝
    2
  • 2
    5v3.1a充放电保护板
    1
  • 3
    18650
    2

Originality of the Model

The author declares that this work is their personally original model

This model is licensed under the following terms:

Credit must be given to the creator

Only noncommercial uses of the work are permitted

Models(1)

  • model file image
    自制充电宝E.3mfDesigner

    154.22 KB

    2026-05-05

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