The lithium-ion batteries made by GS Yuasa are specifically designed for fuel efficiency.
FORBES: The Dreamliner: Boeing's Big Brand Hangs in the Balance
Kyoto-based GS Yuasa says it has dispatched a team to Washington to help in the investigation.
The batteries in question are manufactured by Japan's GS Yuasa, under a subcontract to France-based Thales, Boeing said.
CNN: Quick fix for Dreamliner looks less likely, experts say
Johnson Controls competes with other major automotive battery manufacturers like Exide, GS Yuasa, East Penn and Fiamm in this space.
Japanese inspectors have cleared the maker of the battery, GS Yuasa, of any defects before the unit leaves the factory.
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The batteries in question are lithium batteries manufactured by Japan's GS Yuasa, under a subcontract to France-based Thales, Boeing said.
At the same time, a fruitful resolution of the FAA investigation would bode very well for both Boeing and GS Yuasa.
FORBES: The Dreamliner: Boeing's Big Brand Hangs in the Balance
The Dreamliner is the first private jet to use a lithium battery, according to Tsutomu Nishijima, a press officer for GS Yuasa.
To be sure, Boeing and GS Yuasa are in this thing together.
FORBES: The Dreamliner: Boeing's Big Brand Hangs in the Balance
U.S. and Japanese officials carried out a joint inspection at the facility in the city of Kyoto where GS Yuasa makes the batteries.
Generally tranquil, Yuasa is the kind of place where friendly residents chitchat with neighbors and museums and shops are often left open and unattended.
Japanese authorities in January said they had found no major quality or technical problem with the lithium-ion batteries, which are manufactured by Kyoto-based GS Yuasa.
Yuasa soon became the country's most important soy sauce brewing center.
Some 750 years ago, a Japanese priest arrived in Yuasa after a trip to China, bringing with him a newfound skill for making miso (soybean paste).
Japanese and U.S. investigators looking into the Boeing 787's battery problems shifted their attention this week from the battery-maker, GS Yuasa of Kyoto, Japan, to the manufacturer of a monitoring system.
Officials from Japan's Land, Infrastructure, Transport and Tourism Ministry and the FAA conducted a site inspection of GS Yuasa's headquarters in Kyoto, Japan, on Monday and Tuesday, said Yasuo Ishii of Japan's Civil Aviation Bureau.
CNN: Quick fix for Dreamliner looks less likely, experts say
Furthermore, the costs would be shared by key suppliers, such as Thales (power conversion prime), GS Yuasa (battery supplier), and Securaplane (a Meggitt subsidiary in charge of the battery charger), as their recent market sell-off indicates.
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That brand cannot now be bulletproofed even if Boeing were inclined to offer up GS Yuasa as an easy sacrifice to stakeholder demands for someone to glibly blame, especially as Boeing has itself been accused, however unfairly, of cutting corners to avoid future delays.
FORBES: The Dreamliner: Boeing's Big Brand Hangs in the Balance
Boeing did some of the safety testing on the 787 battery system, but much of the testing was done by a subcontractor, Thales of France, which made the 787's electrical system, and by battery maker GS Yuasa of Japan, according to a previously released NTSB report.
Japanese battery maker GS Yuasa has seen its shares fall 11% since 7 January when an electrical fire broke out on a JAL 787 at Logan International Airport in Boston, although they rebounded 1% on Monday as it became apparent the fault may not have been a pure battery problem.
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