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Local calculation
Entered values never leave your device.
Entered values never leave your device.
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How the calculation works
Estimate runtime from battery capacity, load current and system efficiency. The tool converts the form units and presents the result using readable engineering notation.
t ≈ pojemność / pobór × sprawność
Example
2000 mAh, 100 mA load and 85% efficiency gives about 17 hours.
How to interpret the result
- Rated capacity depends on discharge current, temperature and cutoff voltage.
- Converters, regulators and standby circuits add losses.
- For pulsed devices, use average current over a full operating cycle.
Limitations and safe use
The result uses a simplified model. Check tolerance, temperature, absolute ratings and the component datasheet.
FAQ
Is the result saved?
The latest result may be stored locally in this browser, but it is not sent to LutujTo.
Can I use the result in a project?
Yes, but select a real component with margin and confirm its ratings in the datasheet.