18650, 12 cell holder:
3 x 4 18650 Holder for 12 cells. "Windows" provide quick and easy access for voltage
testing and even charging with magnetic contacts.
All versions are functionally the same, but have different text inscribed.
Wall are designed to be printed with 0.4mm nozzle... (1.2mm thick / 3 perimeters)
Print time @ 60mm/s is around 1.5h.
Base is also 1.2mm thick, so offset Z in your slicer if you would like it thinner to save material or time.