investigators turn focus to japanese maker of lithium ion batteries in grounded boeing 787s - 4 cell lithium ion battery

TOKYO -Japanese and U. S.
Investigators began investigating manufacturers of lithium-ion batteries used in Boeing's 787 aircraft.
Nitomu Nishijima, spokesman for battery maker GS Yuasa, said investigators visited the company's headquarters in Kyoto, Japan, on Monday, and Yuasa is United
Operate with probe.
All of the dec 787 Dreamliners Boeing's Air-to-air flight 787, which was forced to make an emergency landing on overheated batteries, was in western Japan last week.
Boeing has stopped delivering new aircraft until it can solve electrical problems.
Tatsuyuki Shimazu said that the survey on Monday included an introductory meeting and a factory visit and that as the survey continued, more in-depth research on product quality and other issues will be conducted, chief Aviation adaptability engineer in the Aviation Safety section of the Civil Aviation Administration.
Two investigators from the United StatesS.
He said an investigator from the Federal Aviation Administration and the Japanese government is investigating the manufacture and assembly of batteries and any quality issues.
"We are collecting information in order to determine if there is a problem," Shimazu said . ".
Nishijima of GS Yuasa said he could not comment on the details of the investigation.
The inside of the ANA battery burn shows that the voltage it receives exceeds the design limit.
Earlier this month, however, a Japanese airline Boeing 787 battery caught fire in Boston was found to be unovercharged. U. S.
Government investigators say there may still be problems with wires or other charging parts. In the U. S.
Investigators from the National Transportation Safety Commission plan to meet with officials from the safe aircraft technology company on Tuesday.
It is the manufacturer of 787 s lithium ion battery charger and is located at the company headquarters of Ariz Tucson.
Kelly nantell, a spokeswoman for the board, said.