Japanese airlines had 787 battery issues before recent incidents

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Mechanics of All Nippon Airways (ANA) work beside the company's Boeing Co's 787 Dreamliner plane at Haneda airport in Tokyo in this file photo taken January 16, 2013. Boeing Co reported profit dipped in the fourth quarter from a year earlier, and said its 2013 forecast ''assumes no significant financial impact'' from the grounding of its 787 Dreamliner passenger jet by regulators. REUTERS/Toru Hanai/Files