I visited China before Covid, on Chinese airlines I flew on, the use of powerbanks was prohibited during flight. It seems they're aware that the chances of a do

I visited China before Covid, on Chinese airlines I flew on, the use of powerbanks was prohibited during flight. It seems they're aware that the chances of a dodgy lithium ion battery in their midst is a lot higher. The airport luggage scanners are also able to detect lithium ion batteries, one time I was sure I didn't have any in my check-in luggage, but the scanner detected an 800mAh camera battery...