‘Dreamliner battery not overcharged’

The Japanese investigation into a battery that overheated and prompted the emergency landing of a Boeing 787 airliner last week has found no evidence that the battery was overcharged, a top aviation safety official said on Wednesday.

Japanese investigators who retrieved the charred and disfigured battery pack from the All Nippon (ANA) plane initially suspected overcharging, that could become susceptible to overheating and fire.

But data retrieved from the ANA jet suggested that the battery had not charged beyond its maximum design voltage. The US Federal Aviation Administration announced similar findings on Sunday from its probe into a battery that caught fire in Boston.

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