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A capacitor-powered car I saw on PDD—just right for kids to play with. Since it didn’t come with a charger, I decided to make one myself.

There was also a black version, which looked nicer, but it was sold out when I placed the order. Two for 9.9 yuan.

BOM:

7-number battery spring contacts × 2

3.7V charging module × 1

Several lengths of wire and one 3.7V lithium battery

 

 

Simplified installation pictures:

1. Insert the spring contacts for the 7-number battery

2. Solder the charger and battery together

3. Solder the spring contacts in place

4. Secure with hot-melt adhesive

 

Completion:

 

 

 

Bill of materials

  • Name
    Quantity
    Notes
  • 1
    3.7v锂电池一个
    1
  • 2
    3.7v充电模块*1
    1
  • 3
    7号电池弹簧片*2
    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

Models(1)

  • model file image
    电容车充电器_2.3mfDesigner

    2.01 MB

    2026-03-30

No more