I just purchased an ipv d2 with a crown tank and looking for advice on settings to run better battery life good flavor. I use an 80 vg juice mainly but have 60 vg free with purchase of my ipv d2.thank you vapordna.com. I get much better flavor from 60vg juice anyone know why. I'm running at 30 watts 35 - 40 joules 340 - 400 degrees I put fresh charged efest 38amp 18650 and I know after reading and Researching that they are not the best going to upgrade to LG hg2's when I get funds. Any way put the fresh efest in at 7:45am and at 9:30 half dead kills me.