Hey Ladies and Gents, first i'd just like to say hi to the community here, i'm a new member from Ontario, Canada. i recently just started vaping about a month ago, and just had a couple of questions hoping somebody can help 
for starters, my mod is an eVic VTC Dual, running off of 2 IMR 18650 300mAh 3.7V batteries. I run 2 different atomizers right now, first is a joyetech Ultimo with a store bought .26 Ohm coil, and i also have a Smok TFV8 Cloud beast octuplet coil running 1.6 Ohms for when i feel like going through more juice than a kindergarten class at snack break. I've been reading about about the dangers of sub Ohm vaping, and studying a bit of Ohms Law, and im just trying to figure out how "safe" my set up really is. so from what i know is as follows,
with my cloud beast running 1.6 Ohms i run it at 100W which puts out 4 Volts and 25 Amps,
with my Ultimo running .26 Ohms i run at 70W which puts out 4.27 Volts @ 16.41 Amps,
so would these be overloading my 2 18650's? or do the volts for those combine together to create 7.4V total there by i'm safe and still under the maximum capacity? my average draw is around 4.2-5.1 seconds, would smoking repeatedly create more risk? as ive noticed if i take 5 or 6 draws straight the mod itself gets fairly warm?
i know a lot of people are against running sub ohm coils, especially below the .5 range, but i would assume that a store bought coil running .16 would have to be safe for the company to sell it, and most mods blowing up or catching fire is due to people building their own before doing their research, is that correct?
sorry i know there's a lot going into this, i just wanted to be thorough and not waste anyone's time not supplying the correct information
and on that note, i'd appreciate not hearing "opinions" on this, compared to facts. if you don't know for sure, please don't comment. quite frankly, i don't want to blow my face off to trust an "opinion" of someone who knows no more than i do. i am also fairly technical and mechanically inclined so i'm all for real scientific data 
Thanks Guys
for starters, my mod is an eVic VTC Dual, running off of 2 IMR 18650 300mAh 3.7V batteries. I run 2 different atomizers right now, first is a joyetech Ultimo with a store bought .26 Ohm coil, and i also have a Smok TFV8 Cloud beast octuplet coil running 1.6 Ohms for when i feel like going through more juice than a kindergarten class at snack break. I've been reading about about the dangers of sub Ohm vaping, and studying a bit of Ohms Law, and im just trying to figure out how "safe" my set up really is. so from what i know is as follows,
with my cloud beast running 1.6 Ohms i run it at 100W which puts out 4 Volts and 25 Amps,
with my Ultimo running .26 Ohms i run at 70W which puts out 4.27 Volts @ 16.41 Amps,
so would these be overloading my 2 18650's? or do the volts for those combine together to create 7.4V total there by i'm safe and still under the maximum capacity? my average draw is around 4.2-5.1 seconds, would smoking repeatedly create more risk? as ive noticed if i take 5 or 6 draws straight the mod itself gets fairly warm?
i know a lot of people are against running sub ohm coils, especially below the .5 range, but i would assume that a store bought coil running .16 would have to be safe for the company to sell it, and most mods blowing up or catching fire is due to people building their own before doing their research, is that correct?
sorry i know there's a lot going into this, i just wanted to be thorough and not waste anyone's time not supplying the correct information
Thanks Guys