A power bank is essentially an external battery that can be plugged into a smartphone or tablet for additional power. The woman claimed her power bank exploded after she left it charging all night. The images were showed the burnt power bank and a large burnt patch on the floor, suggest that the device was perhaps not being charged as intended. It is not clear what caused the power bank to explode. It also wasn’t clear if this particular power bank was certified and met safety standards or if it was a cheap knock off, the kind of which are commonly found on sale in Thailand.

Source: The Nation Bangkok July 19, 2017 08:38 UTC