Basically that’s what it is, but there’s nothing basic about getting there.
http://vapingunderground.com/threads/the-official-steam-engine-thread.389510/
http://www.steam-engine.org/ohm.html
Moochs Video Library and Battery Table Links
Here's the updated battery recommendations by Mooch for REGULATED mods
Manuf = and Est = is the battery’s amps at full charge tested, not the amps the wrap on the battery says.
By using the calculator, you can see why your iStick was getting hot.
With the .16 coil head at your 55W it needs 18.54 amps.
With your .11 build @60w it wants even more, over 23 amps.
That built in battery isn’t going to have that many amps and is why @ .16 it got warm and .11 got hot.
This is also why, like MrMeowgi said to build lower than the amp limit that Mooch sets for a battery.
Because as soon as we vape, the amps go down and we not within Ohm’s Law anymore. So build to lower amps than fully charged, to have a safety margin.
While this has a more profound effect with a mech mod, you now see why it’s also important when using regulated. Don’t rely on a regulated mod’s safety features.