New to Variable Voltage Batteries. My Kanger 650mAh (fully automatic) gave me thicker smoke and no headaches even after 10 hits. The VV Source Orb 650mAh battery after about 2 hits I start to get a massive headache and smoke is noticeably thinner although more favorable. It's probably me not knowing how to use a VV battery. What voltage should I put it on to get thicker smoke and no headache. Could also be I was using a .5 ohm kanger double coil atomizer. Maybe not ideal when using the Source orb Battery. Any help would be much appreciated.