... DaysWorking Temp. Loads ( for reference only)50W220V12v/20Ah50wModified Sine Wave4~5 hrs per day 1~2 days -20° ... fan,Radio and 70w refrigerator 540W 220V 150Ah/24V 20A/24V 500w Pure Sine Wave 5~7 hrs per day 1~2 ... TV,radio,DVD,fan,computer 1080W 220V 300Ah/24V 45A/24V 1000w Pure Sine Wave 5~7 hrs per day 1~2 ... ,computer,DVD 2160W 220V 600Ah/48V 45A/48V 2000w Pure Sine Wave 5~7 hrs per day 1~2 days ...