The global leader in smartphone battery supply, TDK Corporation (OTC:TTDKY), which also supplies for Apple Inc. (NASDAQ:AAPL), is causing a stir with its groundbreaking battery technology. What Happened: TDK’s new line of smartphone batteries is catching widespread attention. The company’s goal is to revolutionize the smartphone market by offering greater power in increasingly thinner devices, as per a recent Bloomberg report. TDK CEO Noboru Saito revealed that TDK has applied a new technological innovation to smartphones, an approach that competitors have generally used to enhance electric ve…