Boeing says new battery system ensures 787’s safety, but root cause of problem still unclear - The Washington Post

TOKYO — Boeing Co.’s chief engineer for the 787 Dreamliner said Saturday that changes to the lithium-ion battery system are fully sufficient to ensure the aircraft’s safety, although the company has been unable to find the cause of the original battery failures earlier this year that led to groundings of the plane worldwide since mid-January.

Boeing says new battery system ensures 787’s safety, but root cause of problem still unclear - The Washington Post