Yuasa Jumps as Boeing Said to Ready 787 Battery Fix: Tokyo Mover

Feb. 21 (Bloomberg) -- GS Yuasa Corp., the battery maker for Boeing Co.’s grounded 787s, rose the most in three years as the planemaker is said to prepare proposed fixes to ensure the jet’s batteries won’t damage the aircraft or emit smoke.

Yuasa rose as much as 9.2 percent to 356 yen, headed for the biggest gain since February 2010, and changed hands at 346 yen as of 10:45 a.m. in Tokyo trading. Today’s gain erased the Kyoto-based battery maker’s share-price drop this year.

A Boeing team is scheduled to meet in Washington with the U.S. Federal Aviation Administration Feb. 22, said the people, who weren’t authorized to discuss the session and asked not to be identified. The plan includes a harder battery case and a venting mechanism for fumes, one person said.

U.S. and Japanese authorities are investigating the cause of a battery fire on a Japan Airlines Co. plane last month, followed by smoke that caused the emergency landing of an All Nippon Airways Co. flight and led to Boeing 787 Dreamliners being grounded globally since Jan. 16.

Tsutomu Nishijima, a Kyoto-based spokesman for GS Yuasa, which makes lithium-ion batteries for the 787, wasn’t immediately available for comment.

--Editor: Frank Longid