I use an ar mod with the aspire nautilus. I know cartos arent intended for a mech. I already have a kayfun but the aspire is just so convienent and has great flavor with the new bvc coils. My ideal voltage on the aspire is 4.8 when its on a vv. So id like to find a way to get my mech firing at 4.8 volts. I took a look at the 4.8v NiMH batteries. However 600mah is pretty low and having to buy a new charger is a big drawback. So as far as i know my only other option is an18500 with a kick. But i dont know much about them. Do they really fire at 4.8 volts? Is it only when the battery is fully charged? And whats the highest mah 18500? In short whats the most effective way to get my mech firing at 4.8 volts?