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3S Battery Case 3D Printer File Image 1
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3S Battery Case

Richard Sisol avatarRichard Sisol

July 7, 2025

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Description

I designed a 3S battery case for three 18650 cells. Inside the case, there are dedicated holders for a 3S balancer. The structure is robust and durable, as it's intended for use in an RC car that may occasionally crash or flip over. The case includes ventilation openings that allow airflow to cool both the batteries and the balancer during operation. The outer shell features a built-in notch and hook system, enabling quick, simple, and secure mounting in your own projects. My mounting solution will be showcased in an RC car model, which I’ll be publishing soon.

You will need:

  • 8x M2.5 12mm Screw
  • 1x 3S Li-ion Balancer
  • 3x 18650 Li-ion Battery

Optional:

  • 1x XT60 Connector

License:

Standard Digital File License

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