@catsalad [David Attenborough voice] Here the power bank finds itself not in its natural habitat of the electronics junk drawer, but instead on the sidewalk. Being an unfamiliar territory, it puffs up its cells in an effort to appear a larger, more formidable opponent to any would-be predators. In this extremely puffed state, it’s highly volatile, as the pouches are filled with hydrogen gas. Piercing a pouch, or even too much pressure could cause it to explode violently.