Battery Calendar Aging Calculator
Read observed matched storage-only capacity-aging curve within age range; no invented chemistry/calendar square-root law, extrapolated life or separating cycling losses without independent evidence.
Description
Storage-only capacity observations support a calendar-aging curve under matched conditions.
Storage-only capacity observations support a calendar-aging curve under matched conditions. Loss equals one minus remaining capacity fraction.1
Enter nonnegative strictly increasing ages and aligned nonincreasing fractions 0–1 with at least two points, plus a nonnegative in-range age query. Return interpolated remaining and loss fractions.
When to use Battery Calendar Aging Calculator
Use Battery Calendar Aging Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No chemistry-specific law, extrapolated lifetime or separation of cycling loss without evidence is supplied.
Prepare measured device or circuit evidence with matched frequency, temperature, waveform and calibration conditions. Supply explicit caller ratings and limits.
How to use Battery Calendar Aging Calculator and understand its results
- Prepare measured device or circuit evidence with matched frequency, temperature, waveform and calibration conditions. Supply explicit caller ratings and limits.
- Enter storageAgeYears, observedRemainingCapacityFractions, queryStorageAgeYears using the field table and calculation rules, then run the tool.
- Read interpolatedStorageCapacityFraction, observedCalendarCapacityLossFraction. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| storageAgeYears | Storage age years | list of number | Required |
| observedRemainingCapacityFractions | Observed remaining capacity fractions | list of number | Required |
| queryStorageAgeYears | Query storage age years | number | Required |
Enter nonnegative strictly increasing ages and aligned nonincreasing fractions 0–1 with at least two points, plus a nonnegative in-range age query. Return interpolated remaining and loss fractions.
remaining=linearInterpolation(age,capacity,query); loss=1−remaining Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| interpolatedStorageCapacityFraction | Interpolated storage capacity fraction | number |
| observedCalendarCapacityLossFraction | Observed calendar capacity loss fraction | number |
{
"input": {
"storageAgeYears": [
0,
1,
4
],
"observedRemainingCapacityFractions": [
1,
0.9,
0.8
],
"queryStorageAgeYears": 2.5
},
"output": {
"interpolatedStorageCapacityFraction": 0.8500000000000001,
"observedCalendarCapacityLossFraction": 0.1499999999999999
}
}Limitations and assumptions
No chemistry-specific law, extrapolated lifetime or separation of cycling loss without evidence is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Battery Impedance Spectroscopy Calculator: Battery AC spectra determine complex impedance from matched voltage/current amplitudes and their phase difference. Nyquist uses negative imaginary impedance. For a complementary task, use Supercapacitor Esr Vs Temperature Calculator: Supercapacitor ESR depends on temperature and matched measurement conditions. A calibration curve is preferable to an assumed universal coefficient.
References
-
Battery Calendar Aging Calculator — tool.io
Similar or alternative tools
- Battery Impedance Spectroscopy Calculator
Battery AC spectra determine complex impedance from matched voltage/current amplitudes and their phase difference. Nyquist uses negative imaginary impedance.
- Supercapacitor Esr Vs Temperature Calculator
Supercapacitor ESR depends on temperature and matched measurement conditions. A calibration curve is preferable to an assumed universal coefficient.