10 Slot Transparent White Plastic Battery Storage Box Hard Container Holder Case For Aaa/aa/18650 Battery Organizer Accessories - Battery Storage Boxes - AliExpress
Amazon.com: 14 Slots 18650 Battery Case with Carabiner, Water-Resistant and Shockproof Battery Storage for 14 x 18650 Battery, 18650 Battery Organizer Box : Electronics
CellVault XL Battery and Gear Storage - THYRM
18650 Battery Storage Box for 50 Cells by Whity | Download free STL model | Printables.com
AA AAA and 18650 Battery Storage Box by Brian Flores | Download free STL model | Printables.com
Optimal voltage for Li-ion batteries' storage : r/18650masterrace