I have a vv battery with a kanger mini protank , aspire nautilus mini tank with 1.8 ohms coil and an evod tank with 2.2 ohms coils.i'm vaping the aspire mini at 4.2 - 5 volts ,it seems to wick just fine ,for the evod and mini protank i'm using 4.2 volts and 2.2 ohms coils .are these volts too...