https://blog.wongcw.com/2020/10/14/magsafe%e5%9b%9e%e6%ad%b8%ef%bc%9a%e8%98%8b%e6%9e%9c%e6%ac%b2%e6%a7%8b%e5%bb%ba%e8%b1%90%e5%af%8c%e7%9a%84iphone%e9%85%8d%e4%bb%b6%e7%94%9f%e6%85%8b/