I am new to vaping. I understand that the batteries I have, put out 20amp maximum. smok alien mod takes 2 of these LG batteries. when I am vaping at 60w, 0.163 ohms, 3.4 volts, the amp reading shows me 21.92 amps on the mod.
Is it safe, if not, what should I do?
I hate mods that show an amp reading on them, they are to confusing to beginners. With a regulated mod like yours there are two amp load figures, first that you are seeing is the boosted amp push from the control board to the coils of your atomizer/tank, basically meaningless as the control boards on some mods can push close 40 to 50, even 55amps output, but basically meaningless. The amp figure to worry about that isn't displayed is at the supply side, or the amps the control board "Pulls" from the batteries, with that you need to calculate the amps yourself, the formula is simple, example given your watt setting
Watts Set/Lowest Battery Voltage/90%=Maximum Amps
60watts Set/6.4v lowest voltage before error or mod shutdown (3.2v X 2 Batteries)/90%=10.4167 maximum amps
Where what you are seeing is another Ohm's Law formula in action we use for Mechanical/Unregulated Mods
3.4v/0.163ohms=20.8589amps
http://www.steam-engine.org/ohm.html <- Great site to bookmark as it has many good vaping calculators/simulators, this linked is to an Ohms Law Calculator
https://liionwholesale.com/pages/regulated-mod-calculator <- Electronic Regulated Mod Amp Calculator (uses 3.0v per battery in its calculations)