The joint U.S. and Japanese investigation into the battery problems associated with Boeing's 787s has shifted from the battery-maker to the manufacturer of a monitoring system. Japanese officials said Monday the current probe into battery-maker GS Yuasa has been ended since no evidence was found linking it to the source of the issues, and that they will now inspect Kanto Aircraft Instrument Co. as part of the ongoing probe. The company manufactures a system that monitors voltage, charging and temperature of the lithium-ion batteries. (Image Credit: Boeing)
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