787 'Dreamliner' battery was swollen with heat

A battery beneath the cockpit of the Boeing 787 forced to make an emergency landing in Japan was swollen from overheating, a safety official said today, as India joined the US and Japan in grounding the aircraft because of fire risk.
US officials and a Boeing engineer are due in Japan tomorrow to assist with Tokyo’s investigation into the All Nippon Airways 787 that landed in western Japan after a cockpit message showed battery problems and a burning smell was detected in the cockpit and cabin.