Deal with this type of stuff everyday at work. Google - IATA DG Regulations 60th Edition Table 2.3A. This tells you what a passenger can take , cabin or hold , whether operator approval required or a no go . It depends on the type of battery and the Watt Hour Rating. It also depends if packed in , or with equipment as a spare. You can only take a certain number. Some batteries/products are supposed to travel at around 30% charge. The Security should want to see it switched on and off , If you can print out the Table 2.3A and take it with you that might help. Whether the security folk accept it is "Russian Roulette" , same with the carrier. I've taken a scanner before but it runs on rechargeable Lithium Batteries or equivalent basic AA ( AA easier especially if in original un-opened packaging). My camera has Lithum's and I carry spare batteries and have never been stopped. Good luck
Last edited by newaviator; 25th Sep 2019 at 18:41.
Reason: typo