18650/21700 holder 1x1 to 16x16 sizes

Li-ion cell holder

Includes all sizes from 1x1 to 16x16.

Designed for 18650 and 21700 cells with some additional margin that should include enough space for the pvc wrap that cells have.

Real sizes are:

• 18650 - internal circle diameter: 18.8mm
• 21700 - internal circle diameter: 21.6mm

Distance between adjacent cell centers are:

• 18650 - 20.3mm
• 21700 - 23mm

Shells are designed for use in high current applications (drone batteries or RC models) for use with 0.3mm copper strips

• 18560 20.2mm pitch - https://s.click.aliexpress.com/e/_c4XMUVq7
• 21700 23mm pitch - https://s.click.aliexpress.com/e/_c4tDKTWj
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Print recommendations:

Print 1x3 part with 99%, 100% and 101% sizes to check best fitment, slot-in batteries in all slots to check center/edge slot tolerances.
Plastic you are using will have impact on how tight or loose batteries will fit into the shells, So best to print test samples for each new colour and plastic combination.

Settings:

1. Set all settings to Bambu printer/filament defaults
2. Quality
   1. Wall generator
      1. Wall generator: Arachne
      2. Wall transitioning threshold angle: 20
      3. Wall transition length: 400
      4. Wall distribution count: 2
   2. Advanced
      1. Only one wall on top surfaces: Not applied
3. Strength
   1. Top / Bottom shells
      1. Top shell layers: 0
      2. Bottom shell layers: 0
   2. Sparse infill
      1. Sparse infill density: 0
4. Filament
   1. Increase print temperatures by ~20C
      1. PLA 220 → 240
      2. PETG  240 → 260

These settings should generate optimal gcode, for slightly weaker, but fast prints.
GCode preview will look like:

Pictures of a pack with those copper plates:

Please share your feedback and reviews!