https://qooah.com/2014/03/10/oneplus-one-%e7%a2%ba%e8%aa%8d%e9%9b%bb%e6%b1%a0%e6%9c%89-3100mah-%e5%86%8d%e5%8a%a0%e7%a5%9e%e7%a7%98%e6%9d%b1%e8%a5%bf/