Vaping on Holiday – Transporting Batteries and E-Liquids
Should batteries go in your checked luggage, or do they belong in your carry-on? Should they be charged or drained? Even these basic questions spark plenty of debate!
Travelling with batteries
First of all: batteries in your carry-on should be charged, and it’s not unheard of for customs to ask you to switch them on so that 
the officer can check for themselves.
In theory, batteries need to be carried in your hand luggage. However, some vapers say it isn’t quite that straightforward: some airlines only allow a limited number of batteries in your carry-on. Our advice: ask the airline directly!
So, when in doubt, keep them in your carry-on — in the worst case, they may need to go in a separate bag. Especially since the issues with mobile phone batteries, there have apparently been cases of suitcases being held back because they contained batteries that could theoretically pose a risk.
Travelling with e-liquids
E-liquid bottles in your carry-on are a little simpler: they need to go in a bag. To protect the rest of your gear, it’s also best to put any bottles in your suitcase in a bag. You may not take more than 100 ml of liquid in hand luggage. That said, some countries allow up to 10 x 100 ml of liquids in your carry-on — so opinions seem to differ here too. In checked luggage, you can definitely pack considerably more.
German airlines generally state that any type of e-cigarette must be carried in hand luggage. Frequent flyers, however, say: take your e-cigarette apart and put only the batteries in your carry-on. Batteries may be allowed in your suitcase — but that doesn’t mean they have to go there. In short, our advice: there’s only one way to do it correctly: ask the airline, because some passengers may simply have got lucky — or unlucky!
And for batteries, there are silicone sleeves for storing your 18650 cells neatly.
