Well, I like that box but does not fill my day-to-day use. I have a Cuboid with 2 18650, also I am going to buy RX200s with 3 batteries cuz this 2 drain in hours (hard vaper).
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Well, Vaping is the best thing an old man invented in earlies '80 (old stuff uh?)
It's made with a battery (or more) 18650 with 20/30A and the battery feed a coil (or more in my case) so the coil can burn the juice we use so we can inhale it.
Essentialy our juice is made of PG, VG, Nicotine and Flavour.
Also, there are a lot of battery models, a lot of wire materials (kathal which I use, SS 316/200, Nickelchrome, Titanium, etc etc)