I have been using a 650 ego and 650 spinner. After months of lament and going back and forth, I finally dove head-long down the mod rabbit-hole yesterday! I Drove a total of 7 hours to hit up the only 2 vape shops in the area. Picked up a Vamo (2.5 version with the tinted and bordered screen and drip well that accepts T3s), 2 AW 18350s, 2 AW 18650s, xtar VP1 smart charger, Pro-tank, dripping atomizer, 510/ego T3 heads (to use with my smokeless image T3 bodies which originally had 808/ego heads), and some niquid juice. Thing is, not sure at what voltage to consider my batts low to take out and recharge? "Nominal" voltage is 3.6, but I've read they can be safely discharged to 3.2. I also know the Vamo should stop firing at a certain point and give me a "Lo" warning. So 3.6, 3.2, or just when the batt quits? What do you guys say?