Lithium Ion Battery Pack Kit

Parts to make a 4 cell lithium ion battery pack with either 21700 or 18650 cells. Print one sleeve, 2 caps and 2 spacers. Spacers(PLA) are optional but they help keep the cells square to each other when soldering.
Update : Added files for 5S paramed pack. Added files for 3S 18650 pack.
Update : Added fillets in the cap to better adhere the top to the sides.