I think this would be a great idea for you guys.
Make an upgradable tube/sleeve that is essentially a female thread/ male thread so you can put that on a mini and an extender cap on to that so you can use an 18650 battery. Could be useful those long nights where you do not want to carry an extra battery.
Could even replace the original Provari eventually. So you would have the choice of the Mini, Mini+18490 or Mini+tube+18650.
Just an idea. Not sure if you wanted to go that far with it. Since the extender cap works for the Mini to take it to the 18490, I just figured it might be a logical step.
Make an upgradable tube/sleeve that is essentially a female thread/ male thread so you can put that on a mini and an extender cap on to that so you can use an 18650 battery. Could be useful those long nights where you do not want to carry an extra battery.
Could even replace the original Provari eventually. So you would have the choice of the Mini, Mini+18490 or Mini+tube+18650.
Just an idea. Not sure if you wanted to go that far with it. Since the extender cap works for the Mini to take it to the 18490, I just figured it might be a logical step.