The battery is dead. The display screen of Siemens refrigerator is always on, which does not display numbers and consumes no electricity. During the use of Siemens opposite-door refrigerator, its working time and power consumption are greatly affected by environmental temperature. Siemens is a leading enterprise in the field of electronic and electrical engineering in the world. Founded in 1847, its main business focuses on four major business areas: industry, energy, medical care, infrastructure and cities.