Can someone please explain the difference in these models?
Is it truely just the battery size?


Is it truely just the battery size?
When you say 2 hours of battery life do you mean just sitting in the case...
Ok, so lets say I vape for 15 total min every hour, does that mean my battery will stay for 2 hours or my combined vape time, which would be 120min(2hrs)/ 15min (per hour) = 8hrs?
I use an Evo (which is a brand of M401). Whilst sitting at the computer or watching TV, I have been known not to put the thing down and can easily get 2.5 hours out of it, and that's using a battery that is 5 months old, so it is degrading a bit now.
Admittedly, most people believe that the Evo is probably one of the best (if not the best) M401s out there, but generally speaking, it is agreed that the battery life on the M401s is better than any other of it's size (and some considerably bigger in my experience)