2 battery life vs 4 battery life SMOK Alien and Reuleaux 300rx Why does my SMOK run longer on two batteries than my Reauleaux on 4 batteries? Same tank, same vaping habits, same juice? I have to charge my Reauleaux via USB after 5-6 hours, while my Alien lasts into the next day. I do share batteries. I know I shouldn't but I haven't made it to the shop yet to buy more. Thoughts? 
