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Battery Storage Requirement
Estimate storage needed for a specified backup duration.
Enter your values
Your inputs are processed locally. Review the method and limitations before relying on the estimate.
Your result
Worked example
700 W × 8 h requires 5.6 kWh AC, or 7.778 kWh rated at 80% DoD and 90% efficiency.
Frequently asked questions
Is this a professional specification?
No. It is a planning estimate based on the numbers you enter; verify manufacturer guidance and applicable standards.
Does it use live location prices or conditions?
No. Enter actual prices, weather or site inputs; there are no live data calls.