sub ohming

So I usually use the "high end" 18650 battery's from vape shops that are made just for vaping, but I recently ordered a new charger and found one that came with 2 Yliyaya li-ion 18650 batteries, is anyone familiar with this brand and knows if it is a good and safe battery to use in my vape, I...

Im not personally crazy about sub ohm vaping myself, most of my builds come to about .15 to .19 but I do want more of a hit. I'm currently running a Copper Broadside with a Kennedy and also a Legendary Sub Zero competition mod and RDA. However I would like to experiment with it to try and get a...