My battery last for days on my istick50. I hardly charge it..well I mean I don't do it everyday. I better do it now tho..I have 2 go out being you just reminded me.☺☺50W is 50W regardless of the volts/amps ratio used to get to 50W at different resistance (ohms) . Either scenario above will drain the battery at the same rate (not including inefficiency lost to the buck/boost circuitry of the variable voltage / variable wattage mod)
You can check yourself with this handy calculator :
Battery drain | Steam Engine | free vaping calculators
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