18650 Battery Charger
thingiverse
This is a remix from https://www.thingiverse.com/thing:2186774. Had to enlarge the PCB bay a bit. (Now 27 mm). Made the hole in the cover a bit larger so you can see both LEDs. RED when charging, BLUE when charged. Added a model with a dovejoint connection. With this model you can connect multiple chargers together.
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