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UPS runtime calculator
Estimate autonomy from load, VA, power factor, battery capacity, efficiency and battery age.
Size backup power for a safe shutdown or continuity target.
How it works
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What you need to begin
Keep the real details of your project or device to hand. You can correct answers during the process and no account is required to view the result.
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What the result contains
Size backup power for a safe shutdown or continuity target.
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Limits of the simulation
The result is preliminary, depends on the accuracy of your answers and does not replace a quotation, diagnosis, certification or professional advice.
Frequently asked questions
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Why does real runtime differ?
Battery curves, temperature, age and inverter efficiency make the result an estimate.
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Can the UPS be overloaded?
Yes. Both watt and VA limits must be respected, regardless of battery capacity.