I carry a VTC Mini with TFV4 in my left pocket and a pair of spare cells in the right. The tank is great but I keep having one issue with it -- the upper fill cap tends to slide open when pressure is accidentally exerted to the driptip. So I quite often end up having an empty tank and a soaked jacket pocket. No, I don't want to use the rubber bandsTo be perfectly honest with ya, I've stopped using my X Cube II even at home. I rock a Koopor Mini with TFV4. It's less of a hindrance to carry a spare 18650 with me, than lugging a brick of a mod around.
Two batteries last me a day, most of the time... I carry three with me. One in the mod and two spares. Much, much more convenient than a dual 18650 mod.![]()