I removed the plastic insert in my "newest body U2" and was just about to order an 18650 rechargeable, from what I have read the 18650 should fit once the plastic insert is removed ???? Can someone confirm this please.
I removed the plastic insert by placing the U2 battery section in the freezer for 15 min then stuck my little finger in the tube with a slight bend and pulled it out without effort, thanks to whoever came up with this idea on this forum.