I would have to agree on the
" depends on who is actually on duty and their experience of dealing with electronic gizmos "
the battery rules , kind of confuse me,
i recently flown "delta" to Tokyo japan , at the begin of September ,
had a external battery pack for my phone,
never got flagged "going/return trip"
want to the Philippines right after my japan trip
got flagged with the battery pack,
wasn't able to bring it on the plane ,
both times was delta,
same international airport
so not exactly sure how that works hahahahah