The Seattle Times

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Friday, January 18, 2013

Japan probe suspects excess voltage in 787 battery

A photo provided by the Japan Transport Safety Board shows the main lithium-ion battery of the ANA Boeing 787 that was forced to make an emergency landing Wednesday in Japan. Below the battery box is the lid, which has been removed. At right is a model of the battery in normal condition. The lid has been deformed by heat but isn't blackened, suggesting there was no exterior fire. Inside however, the battery is a charred and blackened mess, similar to the state of the battery in a Japan Airlines 787 that caught fire in Boston a week earlier.