Ultralife Corp makes the lithium-manganese battery that powers the emergency transmitter that is being investigated as a possible cause of last week's fire on a Boeing 787 in London, a source familiar with the investigation said on Monday.
As reported earlier, the emergency locator transmitter, or ELT, is made by Honeywell International Inc .
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Ultralife, based in Newark, New York, was not immediately available for comment.
Honeywell says it has produced over 3,000 of the emergency beacons, equipped with the lithium-manganese batteries, since 2005, and there have been no safety incidents.
(Reporting by Andrea Shalal-Esa; Editing by Tim Dobbyn)