On December 30, Beijing time, it was reported that Maxell, a battery manufacturing subsidiary of Hitachi Group, recently announced that it had developed a new lithium-ion battery technology, which could double the power consumption without changing the battery size. It is reported that Hitachi uses a newly developed silicon based material to form the battery cathode, which can double the battery density. At the Second Wearable Expo in Tokyo held from January 13 to 15, 2016, Hitachi will display lithium-ion batte