If your not cloud chasing, or building high power setups, the claims of decreasing performance as the battery dies are highly exaggerated.
If you are interested in just vaping to enjoy vaping it is simple to set up a mech to get plenty if time and still enjoy a nice thick vapor.
I run between .6 and .9 ohms depending on the atty. Funny part is I finally have to pull the battery at the exact same 3.5- 3.4v EVERYONE else has too also. I see very little drop off until that point.
I wake up, pop in a battery, good to go all day with my Kayfun, so that's 3-4 tankfulls in the k4. That night pull the battery while I enjoy my dripper or genesis.
On top of that, if I'm stuck, and can't change batteries right away the vape may seem weaker but UNLIKE a regulated mod that shuts off , it will keep going not leave me cursing that i forgot to charge it last night, So there is that also.
The people complaining about drop off or tearing through batteries, aren't running efficient mech setups.
Its very hard to break a mech.
And, just my opinion, but if anyone thinks a boxmod can touch this kind of sexy, they are tripping lol
Testing an origen coil
Setup right around .7 ish, and will easily run that way for hours.