Today I flew into - and then after a 11 hour layover, out of Panang International Airport (Malaysia) only to have my PowerCore 26,800 mAh taken from me when going through the security check. The told me that it would not be allowed on the flight and I had to leave it behind. I had only just bought it in November. Sucks!
Just a little warning after I’ve done some research… If you buy this power bank, you most likely will need permission from the airport/airline you are flying with to take it aboard.