[IN] Battery & load

Voltage per battery (V)

Nominal voltage of one battery.

Capacity per battery (Ah)

Amp-hour rating of one battery.

Number of batteries

1–40 identical batteries.

Total load (W)

Actual power consumed by the connected equipment.

Inverter efficiency (%)

Percentage of battery power delivered to the load.

Usable battery capacity (%)

Capacity remaining after age, temperature and discharge-rate losses.

Battery bank topology

[OUT] Estimated runtime

Battery backup time29.4 min0.5 hours · energy-based estimate

Nominal energy216 Wh

Energy delivered146.9 Wh

Battery draw352.9 W

Bank current29.4 A

Bank voltage12 V

Bank capacity18 Ah

For the same batteries, series and parallel configurations have the same nominal energy. Bank voltage and current differ.

Estimate, not a runtime curve

This model includes inverter efficiency and usable capacity, but not discharge curves, low-voltage cutoff or inverter idle consumption. Compare the result with the manufacturer's load curve and output power rating. Short runtimes can be optimistic.

[SET] Battery presets

Model battery profiles

Starting values for common models. Confirm the battery specification for your regional SKU. Applying a profile changes only the battery values and topology.

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