April 28, 2026
Description
This is a simple housing for the CN3791 MPPT solar controller (for 1S 18650 batteries). I needed a housing for a bare PCB that I ordered here: https://de.aliexpress.com/item/1005009014611437.html. The corresponding solar panel that fits the 6V board can be bought here: https://de.aliexpress.com/item/1005008098977109.html. The housing was was printed in TPU95a and glued to the back of the solar panel with double sided tape. I have also provided a model/stl that does not use the female JST PH 2.0 connectors on the board but has an opening for wires that can be soldered to the corresponding solder pads on the side of the pcb.
License:
Creative Commons — Public Domain
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