I am having trouble finding the right tank to use on my eleaf 30 watt. I have the Obs v-tct subtank that I figured would work on it, I wanted the kangertech subtank cause the guy at SuperVapeCenter said that would work on it but they were all out of the color I wanted so my friend got me that instead. I have had this battery for awhile but never got to use it cause everytime I put a tank in it says 'atomizer low'. I was also thinking that little screw in the part where you screw that tank in on the battery can be moved around with a little screwdriver and maybe that was the issue, Idk I'm really tired of this happening. I like the tank I have I still want to use it, figured the subtank would work on my eleaf but it doesn't. I also have an itazste vv & an mvp and it didn't work on those either but I didn't expect it to. Any thoughts greatly appreciated!