I've been smoking it since March 2017. I'm on my 2nd device. I've been smoking regular cigarettes since 2010 before IQOS.
It's just depends on a person's smoking style.
It was not delivering a satisfactory puff for me when it still had a charge, then just fell flat because the dimunitive battery couldn't take more.
I also never achieved anywhere close to 20 recharges of the pen. More like 7-9.
This was not acceptable, especially as the tobacco itself was pipe-grade, much better than the usual nitro paper one finds in cigarettes.
In fact I extracted all the unused tobacco and smoked it in my old pipes.
After that, I'm mixing my own ecig juice and that's much healthier and nicotine doses are much more controllable.
Also: to hell with Philip Morris.
I highly doubt someone's smoking style affects the battery power of the smoking pen, because, if you smoke from it like a train engine, it's just got nothing to burn anymore and shuts off - like a normal cigarette. There's nothing related to the battery itself.