The hidden hazard of power banks (and why airlines don't like them)

Not only a lifesaver when you run out of juice outdoors, a power bank can also free your phone from being tethered to a charging socket. Just don't drop it! — Photo: Christin Klose/dpa

BERLIN: Power banks are very handy items to have when your phone or other devices need a charge, but there's one thing you need to be ready for: the sudden hazard that comes when you drop them.

If a short circuit happens within the battery cells, typically from falling onto a hard surface, the power bank can overheat or catch fire, warns the TÜV safety inspection body in Germany.