I have just upgraded my battery to the kanger IPOW2 VW with a kanger aerotank2. I'm not sure I fully understand variable wattage or this battery. I use 1.8ohm upgraded kanger coils, running between 7 to 8 watts according to the oled screen. I've noticed my coils creeping up in ohms. they start at 1.8 after about two tanks, they start climbing. am I burning them up? am I misunderstanding this battery? I've used variable volt bats before, but not variable wattage. I got a calculator app that I put in the volts desired, the ohm, and it gives you the wattage to use. that's how I've been doing it and now after 2 coils doing this, I'm wondering if I'm doing something wrong. my all day vape is BWB malty, or malty toffee... thanks for any input guys..