18650 3-cell case, 4x M4 split shell + BMS mount

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Bounding box: 88.3 × 64.5 × 27.3 mm
Engine: 3D Printing B-rep
Parameters: 20
Published: November 14, 2026

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The prompt

сделай корпус разъемный на 4 винтах м4 и сделай крепление для платы BMS

Parameters

Name	Value	Range
Cell diameter	18.5 mm	18 – 20
Cell length	65.2 mm	60 – 70
Battery clearance per side	0.3 mm	0.2 – 1
Partition between cells	1.6 mm	1.2 – 6
Wall thickness	2 mm	1.6 – 6
Bottom thickness	1.6 mm	1.2 – 4
Lid top / BMS pocket floor	1.6 mm	1.2 – 4
Screw centre inset from corner	6 mm	4 – 20
M4 clearance hole dia	4.5 mm	3.5 – 8
M4 thread-forming pilot dia	3.6 mm	2.5 – 5
Screw head counterbore dia	7.5 mm	6 – 12
Screw head counterbore depth	2.5 mm	1 – 6
BMS board length	50 mm	40 – 80
BMS board width	20 mm	15 – 30
BMS board/component height	3.5 mm	2 – 8
BMS mounting hole spacing, length	40 mm	10 – 100
BMS mounting hole spacing, width	10 mm	4 – 40
BMS standoff diameter	6 mm	4 – 10
BMS standoff height	5 mm	2 – 12
M3 pilot hole in standoff	2.6 mm	2 – 3.5

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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