Power in terms of Watts has almost nothing directly to do with battery life, it's down to the internal resistance of the battery... The power you are referring to, in terms of a device's capability to do its job on the other hand does, because more hot air is needed and so on. But yes, what you said it's a trade-off.I'm not sure what power has to do with battery life, they seem like they are the antithesis of each other... It's either powerful, or efficient.
With regard to the 'most powerful' moniker, how many watts max does your heater draw in use, obviously heating a cold chamber will be the most power demanding, so please let us know the wattage in this scenario? Thanks.
Also, could you show a little more regarding the mouthpiece connection? I'm wondering about aftermarket possibilities.
That was a typo, seriously

Yes, actually, in the process of making detailed videos for each aspect of the device, everything should be up in a couple of days.
No. We have kept the device very simple, in terms of software and hardware, so there's little that could go wrong here. So unless I have made some sort of a mistake with the software, updates shouldn't be needed.Not sure it’s been mentioned….. Hopefully this device will have the ability to be FIRMWARE UPDATABLE, like the S&B Venty?