Battery vial for 26650 size

thingiverse

I required a storage container for my travel flashlight that wouldn't allow the batteries to discharge on my carry-on bag. The original design was intended for 18650 batteries, so I had to adapt it. I enlarged the original 18650 scale by 145% but ended up with an overly tall design. To correct this, I scaled the original design up by 150% and removed 1.3 inches from the middle section. This resulted in a blue vial with interior dimensions of 2.875 inches in height and 1.12 inches in diameter (73mm x 28.5mm in diameter), providing some extra room for the batteries. 26650 batteries typically measure 26mm in diameter and 65mm in height, or 68mm including a safety PCB. For a snug fit, I suggest scaling these dimensions to 97% before printing. The container's walls are slightly thicker than necessary since they were scaled from the original design.