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Battery Backup Runtime & UPS Capacity Calculator

Calculate emergency battery bank runtime in hours based on continuous load wattage, Ah rating, system voltage, and DoD.

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Battery Capacity (Amp-Hours Ah)

Battery Bank Voltage (V)

Continuous Load (Watts)

Usable Depth of Discharge DoD (%)

Inverter Efficiency (%)

Total Battery Energy (Wh)

2,400

Usable Energy (Wh)

1,920

Estimated Runtime (Hours)

4.8

Estimated Runtime (Total Minutes)

288

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About Battery Backup Runtime & UPS Capacity Calculator

Calculate emergency battery bank runtime in hours based on continuous load wattage, Ah rating, system voltage, and DoD.

How to use Battery Backup Runtime & UPS Capacity Calculator

Enter your required input values into the fields.
View the automatically calculated results in real time.

Key features

Instant client-side calculation
Real-time updates without page reloads
Private and secure: zero data leaves your browser

Frequently asked questions

Is this calculation free and private?: Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.

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