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Battery Backup Runtime
Estimate backup hours from usable battery energy.
Enter your values
Your inputs are processed locally. Review the method and limitations before relying on the estimate.
Your result
Worked example
48 V ×100 Ah, 80% usable and 90% inverter efficiency supports a 600 W load for ~5.76 h.
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.