Formula
Runtime = voltage × amp-hours × efficiency × usable depth ÷ load watts.
ELECTRICAL CALCULATORS
Battery Runtime Calculator
Estimate usable battery energy and runtime under a steady load.
HOW IT WORKS
How to use the Battery Runtime Calculator
- Enter the requested values and select the appropriate units or options.
- Review the live result and breakdown.
- Copy or export the result for your notes, then verify consequential decisions.
Worked example
A 12 V, 100 Ah battery at 80% usable depth and 90% efficiency supplies 864 Wh.
Practical guidance
Measure carefully, keep units consistent and treat rounded quantities as planning estimates. Supplier specifications and professional requirements take priority.
Frequently asked questions
Is the Battery Runtime Calculator free?
Yes. It runs in your browser without signup or a paid result screen.
Does Labureka store my input?
No tool input is sent to Labureka by the calculator code. Avoid entering sensitive information on shared devices.
How accurate is the result?
The calculation follows this documented method: Runtime = voltage × amp-hours × efficiency × usable depth ÷ load watts. Accuracy still depends on the inputs and assumptions.
Can I copy or export the result?
Yes. Use the copy and CSV buttons beside the result. QR tools also provide image downloads.