Do NOT click on any vaporpedia.com links. The domain has been compromised and will attempt to infect your system. See https://fuckcombustion.com/threads/warning-vaporpedia-com-has-been-compromised.54960/.
Total piece of junk. I bought one. Couldn't hardly any vape out of it so I sent it back for warranty repair. They sent me back a new one[unused] and the first one worked better.
I have been using 18650 batteries in my e-cig for over 7 years now. Nothing even close to a problem when you buy good batteries and use a good charger.