Yet Another AA/AAA/18650 Battery Case

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Yet Another AA/AAA/18650 Battery Case

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Print Profile(4)

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X1
P1S
P1P
X1 Carbon
X1E
A1
A1 mini

AA case, 0.2mm layer, 2 walls, 15% infill
AA case, 0.2mm layer, 2 walls, 15% infill
Designer
54 min
1 plate
4.9(32)

AAA case, 0.2mm layer, 2 walls, 15% infill
AAA case, 0.2mm layer, 2 walls, 15% infill
Designer
46 min
1 plate
4.9(15)

18650 case, 0.2mm layer, 2 walls, 15% infill
18650 case, 0.2mm layer, 2 walls, 15% infill
Designer
1.3 h
1 plate
4.8(12)

0.2mm layer, 2 walls, 15% infill
0.2mm layer, 2 walls, 15% infill
54 min
1 plate
5.0(1)

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Released

Description

Cases that hold 4 batteries each, for AA, AAA, and 18650 sizes. They're a snug fit, use minimal plastic, have lids that snap on satisfyingly, and feature labels and charged/uncharged indicators so you can tell which battery you want to grab.

Fusion 360 (.f3d) and STEP files are uploaded too, and the model is fully parametric so you can easily make it fit any size battery that you'd like.

03/28/2024: I've updated 18650_case.stl with a new version with slightly increased battery slot sizes following feedback about a tight fit from a few users.

Comment & Rating (79)

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Print Profile
18650 case, 0.2mm layer, 2 walls, 15% infill
Print qualitatively perfect (filament Creality PLa Grey). The only defect I found is the tolerance of the holes for batteries. internal ones are perfect while external are too tight and it’s extremely hard to pull out a battery.
The designer has replied
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Hey, what do you mean by internal vs. external holes? This is designed to have some clearance even for batteries on the largest end of the allowable spec for 18650s. Could you maybe measure yours with a micrometer (or caliper if that's the best you've got) and let me know their diameter?
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Replying to @austinvojta :
他所说的内部孔应该是指3.4号电池位 外部孔是指1.4号电池位(即两侧)
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way too tight for me too
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Nice design, thanks!
The designer has replied
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Whoa... is this picture AI generated or edited or something? Why does it look so weird?
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Replying to @austinvojta :
AI generated the background, yes
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Print Profile
AAA case, 0.2mm layer, 2 walls, 15% infill
Came out great with perfect tolerances
1
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Print Profile
AA case, 0.2mm layer, 2 walls, 15% infill
very good print
(Edited)
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Absolute perfect fit for batteries (not too tight) and the caps are tight click and not open by accident.
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Print Profile
AA case, 0.2mm layer, 2 walls, 15% infill
nice design. fitting well
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Print Profile
AA case, 0.2mm layer, 2 walls, 15% infill
prints perfectly
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Print Profile
18650 case, 0.2mm layer, 2 walls, 15% infill
prints perfekt in Bambula PLA CF
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Print Profile
AA case, 0.2mm layer, 2 walls, 15% infill
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Print Profile
AA case, 0.2mm layer, 2 walls, 15% infill
nice design but I needed to adjust xy hole compensation as 18650 batteries hardly fit inside
The designer has replied
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This profile is for AA batteries, but assuming you just rated the wrong one. Could you maybe measure your 18650s with a micrometer (or caliper if that's the best you've got) and let me know their diameter?
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@Picchietto bump in case you're able to provide a measurement so I can improve the design!
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I've updated 18650_case.stl with a new version with slightly increased battery slot sizes. Give it another shot if you'd like!
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