​Samsung develops 'graphene ball' to speed up battery charging Samsung Advanced Institute of Technology (SAIT) has synthesized a 'graphene ball' that can be used to make lithium-ion batteries charge five times faster. By Cho Mu-Hyun | November 27, 2017 -- 05:08 GMT (13:08 GMT+08:00) | Topic: Innovation Samsung Electronics' research arm has successfully synthesized a "graphene ball" that can be used to make lithium-ion batteries last longer and charge faster, the company has said. Samsung Advanced Institute of Technology (SAIT) said using graphene ball material to make batteries will increase their capacity by 45 percent and increase their charging speed...