New to this forum and to vaping in general. Just purchased a Gr-Star ZNA60 with Delta II tank but I am not sure if I'm using it the right way? What is the optiumum W that I should be using with this tank?
Also, I have on 18650 battery but its not nearly but I need couple of more. There are some 6000mha batteries out there. Would I be able to use them with the ZNA 60?

Also, I have on 18650 battery but its not nearly but I need couple of more. There are some 6000mha batteries out there. Would I be able to use them with the ZNA 60?