Calculate UPS battery runtime: Runtime ≈ (battery_capacity_Wh / load_W) × efficiency. A 10 kWh UPS at 5 kW load with 90% inverter efficiency gives ~1.8 hours runtime.
Enter the values for the scenario you are assessing. Calculate UPS battery runtime: Runtime ≈ (battery_capacity_Wh / load_W) × efficiency. A 10 kWh UPS at 5 kW load with 90% inverter efficiency gives ~1.8 hours runtime. Use the ups battery runtime result to inform your calculation.