Versapak Battery 18650 Conversion

Housing for 18650 Battery to adapt to Black and Decker Versapak power tools

Revised design changes: V3
The bulkhead structure that holds the spring is now thicker, from 3mm to 6mm. This is to
add strength and stability when things become hotter than normal.

Additional Recommendations when using this mod for high current applications.
1} Print with higher temp filaments like PETG or ABS.
2) Use very long screw when securing the spring. On the nut side, add more nut and washer in alternate order. This will serve as heat sink. Dont use use the cap anymore.
3) Review diagram with filename FusedHC.jpg

Yellow Layout: Initial aluminum layer.

Arrow A (optional): Showing a fused aluminum layout. That is a current "choke point" that serve as a fuse just in case your battery is capable of high current. That choke point would burn off like a cutoff fuse if it exceeded the maximum current for the motor. Unfortunately, I dont know the how much narrower it should be inorder to ac