Ok why the H**l do people still think freezing battery's keeps them "fresh", i use my LiPo and Liion battery's for EV's more then phone's, cameras etc, and i can tell you that doing this cold season i one day thought that the temperature was good but it was too cold and the result was that my Electric Moped (Also homemade) lost about 10-15% capacity because of the cold temperature (not very isolated battery case)