Description
voltageChange = lateVoltage-earlyVoltage; meanSlope = voltageChange/elapsed.
Battery state-of-charge and efficiency terms need explicit sign, capacity, cycle and time conventions. Charge efficiency differs from energy efficiency, and an arithmetic update is not necessarily physically bounded or a battery-health assessment.
voltageChange = lateVoltage-earlyVoltage; meanSlope = voltageChange/elapsed.
When to use this tool
Use Battery Ocv Relaxation Gap when checking one supplied battery charge, voltage or SOC contribution.
How to use the tool and how it works
- Enter earlyVoltage, lateVoltage, elapsed. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read voltageChange, meanSlope. Use the output convention below.
Require positive elapsed. voltageChange = lateVoltage-earlyVoltage; meanSlope = voltageChange/elapsed.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| earlyVoltage | Early Voltage | Required. Finite number. |
| lateVoltage | Late Voltage | Required. Finite number. |
| elapsed | Elapsed | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| voltageChange | Voltage Change | Required. Finite number. |
| meanSlope | Mean Slope | Required. Finite number. |
{
"input": {
"earlyVoltage": 4.2,
"lateVoltage": 4.1,
"elapsed": 10
},
"output": {
"voltageChange": -0.10000000000000053,
"meanSlope": -0.010000000000000054
}
}Limitations and assumptions
- Potential and time units must be consistent. The signed average slope does not establish full relaxation, equilibrium open-circuit voltage or battery condition.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a validated battery model, measurements and manufacturer constraints for operation, protection or health assessment.
References
Similar or alternative tools
- Battery Soc Charge Count Increment
Apply an explicit signed current-time charge increment to an initial state of charge without clamping the result.
- Battery Coulombic Efficiency One Cycle
efficiency = dischargeAh/chargeAh; unrecoveredAh = chargeAh-dischargeAh.