In May, supply chain analyst, Ming-Chi Kuo said that Apple Inc. (NASDAQ:AAPL) plans to enhance the battery life of its iPhone 16 series by adopting stainless steel cases. Now he says, this step can help Cupertino meet EU regulations while also increasing the device’s battery cell density. What Happened: On Sunday, Kuo, an analyst at TF Securities, took to X, formerly Twitter, and said Apple’s move to stainless steel cases for its next iPhone iteration will not only comply with EU battery regulations but also increase the battery cell density by 5-10%. He also stated that the design change will…