Both the Sony/Murata VTC6 and the Samsung 30Q are only a 15A battery. The reason why some websites list them as 20A, 30A or 35A is because they just copy-paste numbers from the manufacturer's official datasheet without knowing what those numbers factually mean. The
Continuous Discharge Rating (CDR) is 15A for the VTC6/30Q in spite of the fact that there exists a
temperature-limited maximum continuous discharge rating for these two different batteries.
Vaping at 70W on a dual 18650 battery regulated mod such as the Aegis Legend is considered to be still within the
recommended maximum wattage limit that these aforementioned batteries can handle with
reasonable safety. But this doesn't make it "
safe". The user of the mod is still responsible for his/her own safety.
None of the typical round lithium-ion chargeable cells we use for vaping were ever designed to be used outside a fully protected battery pack with a protection circuit. The built-in protection features of a regulated mod can
not protect against the user choosing the wrong type of batteries or misusing/mishandling the batteries. That plus the fact these protection features can still fail, and should therefore
not be relied upon.
A quick rule of thumb
for a regulated mod that's easier to remember than the equation previously explained by
@~Don~ is to just take the maximum wattage number that you will be vaping, and divide it by the number of batteries that the regulated mod uses. Next, divide
that by three. So, for example, 90W divided by two batteries equals 45W, divided by three equals 15A. So the maximum recommended wattage for a regulated mod using the VTC6/30Q is 45W
per battery.
If you need higher wattages still, you can either 1/ consider to grab the Molicel P26A because, at the time of this writing, it is the best performing 25A battery available to us in the 18650 department or 2/ consider to grab a triple 18650 battery regulated mod. Or 3/ maybe consider the combination of both these options. Or 4/ if the limited amount of vaping time you'll get is less a concern to you and you, like
me and Chuck Norris, eat wattages for breakfast, then also consider to grab the Samsung 20S because, also at the time of this writing, it is the best performing 30A battery available to us in the 18650 department. (I still eat a couple other departments for my
second breakfast, but I don't tend to talk a lot about that subject anymore these days, as I later found that talking about it causes
internet tears, which, in turn, causes accelerated battery corrosion.)