Just popping back in to say I'm still loving my flask. It does have the cold weather glitch freeze up board, but I'm not going to send it in just yet. So far it's an easy fix, don't try and fire it if it's super cold. My reos are my go to for cold days anyhow.
The dual battery really makes the flask my preferred dna40 device. The dna 40 has turned me into a dripping fan. Using one on a single battery dna40 at 40w requires me to swap fresh batteries in every two hours or so if I'm vaping heavily on duals, not so with the flask. It usually gets me through an entire day and into the next before I'm getting the weak battery warning.
I'm super excited for their squonker! It with a bf derringer might be in my future. Any word on what they're looking to come in at for price point?
Coldpunk,
I have had the same battery experience with the Flask. I don't run as much power as you do but two days on a set of batteries is the norm for me.