Thanks again. Just one more thing. I notice the Ohms on many of these are 0.5 or 1.0. I think my current bottom coil in my kangertech mini tank is 1.8. Wont a much lower Ohm rating go through much more juice or does it not work like that? So top coil no leaks onto batteries? I think thats been half the problem. Batteries failing, chargers failing, probably all down to leaks.