.having a little trouble with the tank i bought today--either that, or the box mod , i also bought today (snow wolf 200w). with respect to the box mod, the display doesn't show the temperature as it had at first--it simply states "power" where the temp once was (as you can see below) the tank, is the Uwell Crown...two of the three included coils (0.5 and 0.25ohm ) have presented with this same issue the third (0.15ohm) has not yet caused a problem; however i just put it in (all are nickel and temp control compatible)--below is a picture of the screen...as you can see I'm well below the 75 w, temp cut-off; and, the battery is still at a half charge--in any case, the mod is still firing and has yet to display a "low battery" indication. Mind you, with the temperature no longer being displayed, the vapour produced is considerably hotter and the tank seems to flood the coil consistently (for both the aforementioned coils)--making sputtering sounds, and at times, spitting hot vapour threw the drip tip into my mouth,