Mustek PowerMust 1400 USB. Output power capacity (VA): 1400 VA, Output power: 840 W. Battery recharge time: 8 h, Typical backup time at half load: 45 min. Colour of product: Black. Weight: 14200 g. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 0 - 90 %