Been reading the thread regarding the power bank diverting an easyJet flight recently (unable to comment on it directly so just wanted to add something that may have been missed from the thread)
The question of why the flight diverted at that specific time after it had been flying for some time already can be easily explained...from a pax point of view.
Families....everyone wants to help pack the bags before leaving to go home. Unlike packing before the holiday, it can get a bit messy when going home....things put in the wrong bags, things being left behind etc
Is it not possible that a family who took their power bank on holiday, placed it into their carry on bags on the outbound flight.....but in the melee of packing to go home it ended up in a checked bag and that mistake was not discovered til part way through the flight someone wanted something from the carry on bag and at that point realised that the power bank was not where it should be....with "where did you put the power bank" question to the rest of the family and a reply "I put it in the suitcase" from one member of the family who maybe did not realise the potential harm in doing that. The pax then alerts the cabin crew, who in turn alerts the flightcrew and they divert out of basic caution.
It is totally possible that in the rush to get the kids packed and everything else packed that a power bank would end up in the wrong bag........however......you do have to wonder why it was not picked up on the baggage scanners prior to being loaded, but that is a different thread altogether.