ClarityHow to use this tool
- Enter voltage, capacity.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Voltage | Numeric value. Unit: V. Zero or positive. | 12 |
| Capacity | Numeric value. Unit: Ah. Must be greater than zero. | 10 |
Result for these sample inputs
120 Wh
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Nominal energy = voltage × amp-hours.
Using voltage = 12 V, capacity = 10 Ah, the result is 120 Wh. Change these example inputs to match your task; use the method above to check each step.
What to keep in mind
Nominal voltage approximation; usable energy varies with discharge conditions. Ideal-component calculation for study and estimation. It does not select safe wiring, protective devices or component ratings for an installation.
Methodology maintained by ClarityKit. How these tools are built and checked.