NYT has a link up which it claims has been verified. It is a video of someone at a market who had one of these in their messenger bag. The video shows a decent size explosion, which blew a big hole in the bag and knocked the guy to the ground.
I doubt you could make an explosion that big with a AA battery. They must have planted the stuff in some massive supply chain hack.
It was, until the mods got rid of it
(Nvm, it is still there, I forgot I blocked the loser)