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Battery Inverter Size Calculator

Inverter kW rating with headroom and surge coverage.

Inputs

Inputs and assumptions

Loads running at once.

Motor starting or inrush peak.

Safety margin on continuous load.

Result

Sized continuous rating
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Recommended inverter
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What to check

  • Continuous and surge kW
  • Headroom percent

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This calculator is a first-pass screening tool. Verify your utility tariff, metered usage, equipment specifications, and installer quotes before making a decision.

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