APC Symmetra PX. Output power capacity (VA): 20000 VA, Output power: 20000 W, Input operation voltage (min): 177 V. AC outlet types: NEMA L21-20. Battery technology: Sealed Lead Acid (VRLA), Battery type: SYBT4, Battery recharge time: 2.65 h. Colour of product: Black. Weight: 819550 g, Width: 610 mm, Depth: 902 mm