OK, made it to Helsinki. Hitt, this is a nutshell answer, all batts in your carry-on, you can pack all the liquid you want in check-in, you can carry small (15-100cc) bottles inside a 1 liter (quart) clear bag along with your toothpaste, eye drops etc... in your carry-on, just took a pic of what I brought on this trip. Most tight sealed and fully filled tanks tend to leak so I make sure I vape most of it before I throw them in my liquid 1 liter clear bag and top them with a condom. I do not travel with the big tanks but smaller/skinnier ones in the picture. I do usually have one batt with atty attached in a side pocket of my carry-on and no one has said anything over here. A bigger tank like the ones you like just put it in a bag you have all your electronics in like chargers, cords etc... and put it in your carry-on.
Well I took a picture but for some reason photobucket /or ECF will not let me link it?