Battery Runtime Calculator

Estimate how long your battery system can power your home during an outage or when not charging.

Backed by EIA data~2 min

Your Inputs

Battery Capacity (kWh)

Typical: 10–15 kWh

Average Load (kW)

Typical: 1–3 kW

Quick Presets

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Runtime Estimate

5h 0m

Assumes constant load; actual runtime varies with temperature and battery age.

A 10 kWh battery powering 2 kW of load will run for approximately 5 hours and 0 minutes.

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