Amazon Deal Alerts & Discussion Thread

[TARTARA]

What are you talking about guys… !?

Take a look… and be more careful with your equipment… please… !?

is there a cheap 18650 to 21700 battery adapter tubes/holders

There are a few older threads talking about Fenix ALF-18 18650 to 21700 Battery Adapter but its to pricey for me. Are there any cheaper alternatives or maybe some 3d printer design files I can use to diy? Wrapping seems easy enough for the diameter 18mm to 21mm. What about the height differences 65mm to 70mm and conductive material through the bottom for ground?