H1 18650 battery holder

A much more portable and practical version of my other case, now with a much improved screw-on cap. WARNING: LITHIUM BATTERIES ARE DANGEROUS. BE CAREFUL! I AM NOT RESPONSIBLE FOR ANY KIND OF DAMAGE!!! You can salvage electrodes from other battery holders and heat set them in place or you can just use folded up aluminum foil. A spring is heavily recommended. There is also now space for a 1S BMS module in case you feel that you need it, picture for recommended wiring is included. Suggestions are welcome