First off, Hello. I am new to vaping and ecf and would like to say thanks for any help ahead of time !! I am using a V4L Vapor-King (which I believe is an 808D battery). All they offer are cartomizers and I have decided I would like to go to an atomizer and drip my juice !! I was woundering if 901 atomizers would work with my batteries and passthrough or do I need some kind of adapter? Also, what resistance atomizers should I use? Thanks again !!