You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

The Boston Globe

Business

Voltage not cause of 787 Dreamliner battery fire

NEW YORK — Federal investigations said Sunday that they had ruled out excessive voltage as the cause of a battery fire on a Boeing 787 in Boston this month, widening the mystery into what led to the grounding of the 787, the world’s most technologically advanced jet, after a second battery-related problem last week.

With investigators focused on the plane’s lithium-ion batteries, the National Transportation Safety Board said data from the flight recorder indicated the battery ‘‘did not exceed the designed voltage of 32 volts.’’ The fire aboard a Japan Airlines plane on Jan. 7 at Logan International Airport occurred after passengers had left.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week