How it works
Runtime hours = nominal capacity times usable depth and efficiency, divided by average load.
Input definitions
- Battery nominal capacity (kWh)
- Enter the value in the labeled unit.
- Allowed depth of discharge (%)
- Enter the value in the labeled unit.
- Inverter and discharge efficiency (%)
- Enter the value in the labeled unit.
- Average load (kW)
- Enter the value in the labeled unit.
A worked example
- Battery nominal capacity (kWh)
- 10
- Allowed depth of discharge (%)
- 80
- Inverter and discharge efficiency (%)
- 90
- Average load (kW)
- 0.8
Assumptions & limits
Uses only the values entered and does not fetch live prices, fees, rates or eligibility rules. Verify quotes, contracts, measurements and local requirements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-20. Content checked against the stated method and examples. Our verification approach.
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Common questions
Why can actual runtime be shorter?
Battery limits, temperature, ageing and load spikes can reduce usable energy.
How does Solar battery usable runtime calculate the result?
Runtime hours = nominal capacity times usable depth and efficiency, divided by average load.
What should I check before using Solar battery usable runtime?
Uses only the values entered and does not fetch live prices, fees, rates or eligibility rules. Verify quotes, contracts, measurements and local requirements before acting.