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I only use aga-t's 2.3Ω / 32g Kanthal on the Vamo normally vape about 3-5mls a day

at 3.6v or 6-6.5w depending on which mode it's set to. In theory 2250mAh should last me 23Hrs. Yet for me this is not the case.
My Gripper VV seemed to give me better battery performance although I only used VN's on it. (Cotton/32gK/2.6Ω/3.2v/18-20hrs)
I have managed to convince myself the ohm's/wire size is playing role in this. Don't ask me why

, I have no scientific proof, I'm totally ignorant when it comes to this sort of thing, for me it's all Magic

. Nevertheless, I have placed an order for 34g Kanthal, will set new coils using the same ohm's and see if that will help increase battery life, I doubt it, but will try regardless and post findings if there are any significant differences.
Now, I'm not sure if it actually has anything to do with the Vamo's electronics. So far yours is the only post I've read concerning this issue, perhaps others haven't recognised this a problem yet. I'll admit I fell instantly and rather hopelessly in love with my Vamo, I cannot for the life of me be unfaithful to it yet, and sadly (for them) all my other PV's have fallen by the wayside, it's unfortunate that they simply cannot offer me the same vaping pleasure as my Quirky Vamo can, even so, it would be good to get to the bottom of this, I doubt we are alone in our experience.