Universal Powerbank (with source files)

thingiverse

The idea behind was to create a universal body and replacable pcb board holder modules.All source files in OpenScad are included.Step-by-step guide:measure and design/adjust connectors plate by trial and error with holes_test.scaddesign/adjust pcb holder in pcb_case.scad, use a connector plate from designed on first stepdesign/adjust a body in body.scad for desired number of 18650 cells. Adjust cut-off for the size of pcb body. Use supports for this part!!!design/adjust a cover in cover.scad. You need to print 2 of them for suredesign/adjust a button in button.scadConstruction:Insert button into pcb_holdersolder wires to batt+ and batt- on a pcbsolder pieces of nikel strip on the other ends (depend on number of 18650 cells)insert wires through main body and out of two sidesgently push pcb case into main bodyinsert 18650 cellsuse spot welder to attach nikel strip to 18650 cellsclose side coversYou are done!!!