My chief concern with this situation is that when these rules are applied you're essentially moving li-ion batteries into the hold of the aircraft. Laptops that are accidentally left on could overheat in suitcases, tablets could get impact damage during turbulence etc. Surely this is a huge fire risk?

I recently flew and was asked if I had spare batteries or e-cig devices in the bags I wanted to check in since they aren't allowed in checked luggage - presumably for this reason. In fact, I just did some searching and found this article: https://www.bloomberg.com/news/articles/2017-04-07/laptop-ba...

Are there fire suppression systems in modern airliners? Would they be able to stop a laptop battery that's combusting?