Hitachi develops automotive lithium-ion battery having the world's highest output – sampling set to start in autumn

Tokyo, May 19, 2009 – Hitachi, Ltd. (NYSE:HIT / TSE:6501,hereafter Hitachi) today announced that Hitachi, Ltd. and Hitachi Vehicle Energy, Ltd. which develops and manufactures lithium-ion batteries for automotive applications such as hybrid electric vehicles, have developed a lithium-ion battery having the world's highest power density of 4,500W/kg, 1.7 times the output of the company's mass-produced, automotive lithium-ion batteries. Sampling of the new battery by domestic and overseas car manufacturers will start in autumn.