Nominal energy
The supplied worksheet uses 5,000 Wh for each battery module and does not apply inverter loss, reserve, temperature, age or depth-of-discharge factors.
Home backup power · preliminary planning
How long could the essentials stay on?
Build a planned outage load from the supplied Electrafy worksheet and compare the nominal runtime estimate for one to four battery modules.
1–4 modules5–20 kWh nominalWorkbook-based estimate
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Storage configurations5 / 10 / 15 / 20 kWh
Official continuous output6,000 VA
Official AC surge18,000 VA
Current official brochure values are product context. The estimator below preserves the supplied worksheet’s separate 6,000 W screening rule; watts and volt-amperes are not interchangeable without application details.
Electrafy ES-6 planning tool
Build the outage load.
Enter quantities for always-on loads and planned hours, operations or recharges for occasional loads. All fields start at zero so every result reflects an intentional selection.
What the estimate means
A planning result—not a runtime guarantee.
Planned-use block
Hours, operations and recharges are deducted once from nominal energy. They are not automatically repeated for every day of a multi-day outage.
Continuous load
Remaining nominal energy is divided by the worksheet’s effective continuous watts, including its stated duty-cycle averages.
Load screening
The worksheet adds selected running values and flags 6,000 W or more. It is not a starting-surge, power-factor or electrician’s circuit calculation.
Medical and safety-critical loads need a separate plan.
Never rely on this estimate alone for life-support, emergency preparedness or medically necessary power. Confirm real device nameplates, startup loads, required runtime, transfer strategy and installation with qualified professionals.