I know about battery banks if the writing on the battery ok or with paper work,water u drink or lose it everywhere the same.I,am sure many countries are strict on different things.
I was leaving manila and they were more concerned about the cigs in the bag and 1 lighter.She said alot of cigs in the bag 2 cartoons only,The battery bank was fine and the anything else but she was concerned about a lighter and the cigs i had.Different countries and rules and they took the lighter