
Case for 9V (6F22) battery
thingiverse
I make a compelling argument for using a 9V battery. I opt for an accu Li-ion 350mAh, pin connectors and a "3.7V 9V 5V 2A Adjustable Step Up 18650 Lithium Battery Charging Discharge Integrated Module" sourced from Aliexpress. I have included the source code in FreeCAD.
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