Dewalt 20v max upgrade spacer 5 cell to 15 cell

This is an add on to the 5-10 cell spacer that I created here:
https://www.thingiverse.com/thing:3120277
This spacer turns a 5 cell pack into a 15 cell pack. It's definitely larger and heavier, I've only built one of this type because for day to day I find the 10 cell pack the perfect balance of run time vs weight/size. If anyone wants it I can easily create a 20 cell 25 cell or 50 cell whatever size you want, I allow 18.25mm per new cell group and it's as easy as modifying the extrude numbe