BT4-4CHN Tester Front Panel (18650/21700)
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Front panel for BT4-4CHN tester (18650/21700 version). No external battery holes. Check compatibility — manufacturer oft
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- Printables
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- Creative Commons — Public Domain
This front panel is designed for the BT4-4CHN tester in the version that supports both 18650 and 21700 battery types. My model does not include holes for external battery connection.
Installation recommendations:
Fit the printed panel to your device and verify everything aligns. Use hand tools for minor adjustments if needed.
Attach the fan grille using hot glue.
I've built in channels for indicator lights. You can turn them into light pipes by filling with hot glue: apply molten glue into the channel until a small semicircular drop appears on the front face.
Warning!
There is a high chance of mismatches! The manufacturer of 18650/21700 testers frequently changes their device design. Carefully measure your specific unit and assess compatibility with my model.
You may also modify the part with hand tools — if so, increase the number of perimeters in your slicer to maintain sufficient strength after machining.
The kit includes two files:
The original file in .FCStd format (FreeCAD 1.1) — for error correction and improvements.
The finished .3mf print profile (Bambu Studio) — with configured supports, bridges, added text, and a fan grill (recommended as a base).