I recall flying back to the US just after Pan Am 103 went down over Lockerbie.
My batteries were taken from me by the security chaps - long before we reached the baggage check in at LHR.
Was that a knee jerk reaction, or do the x ray machine, scanners etc detect anything out of the ordinary with a battery, or number thereof?
Perhaps that is best left an unanswered question - for securities sake.