Summary

This is intended to hold 4x TP4056 charger boards and allow you to cleanly and easily wire them to a quad 18650 battery holder.

I held in the TP4056 with a small bit of glue and the battery holder is mounted with m3x5mm screws, there are 8 holes but you definitely don't need to use all 8, i only used 2-4.

EDIT: added a V2 due to some community comments, allows for a bit more air circulation for cooling as well as access to the USB if someone wants to use that

EDIT: V3 added, this one cleans up the wiring a bit, direct solder to the bat+ then you can just tie together the IN- pads and don't need anything on the BAT-