The electric blanket is estimated at 60W, the lamp is estimated at 40W, and the charger is estimated at 15W. 120W 80W 30W=230W,100KW\/H divided by 230=430 hours. (All electrical appliances are on 24 hours a day) Assume that the electric plate is used for 8 hours a day, the lamp is used for 5 hours a day, the charger is used for 4 hours a day, 120*8 80*5 30*4=1480W.1480w\/1000=1.48 degrees is about 1.48 degrees a day, 100 degrees divided by 1.48 degrees =67 days. Of course, the power of electric appliances such as electric plate and table lamp is estimated, and the actual indicator can be used to obtain a more accurate time.