Stationary BESS Peukert Capacity Derating, C-Rate Kinetics, and Inverter Tare Loss Benchmark Matrix
Electrochemical capacity retention curves across 0.05C to 2.0C discharge rates and continuous 35W inverter quiescent tare dissipation referencing IEEE 485 sizing methodologies.
1. Abstract & Dataset Scope
Provides a source-informed deterministic benchmark matrix evaluating battery usable capacity (Ah) and autonomy runtime as a function of continuous discharge rate (0.05C to 2.0C), Peukert empirical exponent (k), and continuous inverter standby tare power dissipation (35W) across lead-acid (AGM and flooded) and LiFePO4 chemistries referencing IEEE Std 485.
2. Technical Methodology & Benchmark Formulation
Calculated using the classical Peukert electrochemical equation (I^k * t = C) and constant-load power integration accounting for continuous inverter quiescent standby tare losses (35W) on a standardized 100 Ah battery bank across normalized discharge rates from C/20 (0.05C) to 2C. Values represent standardized benchmark scenarios rather than certified laboratory test data for specific manufacturer battery models.
3. Data Dictionary & Variable Definitions
| Variable Name | Symbol | Unit | Type | Description | Example |
|---|---|---|---|---|---|
| Battery Chemistry | Chem | Chemical Classification | String | Battery electrochemical cell chemistry category | LiFePO4 |
| Continuous Discharge Rate | C_rate | C-Rate (1/h) | Float | Discharge current normalized to 20-hour nominal capacity rating | 0.5 |
| Peukert Exponent | k | Dimensionless | Float | Empirical rate-capacity exponent derating constant | 1.04 |
| Nominal Capacity | C_nom | Amp-hours (Ah) | Float | Standard 20-hour nameplate battery capacity baseline | 100 |
| Effective Delivered Capacity | C_eff | Amp-hours (Ah) | Float | Delivered usable capacity at specified discharge C-rate | 97.8 |
| Effective Capacity Ratio | Cap_eff_pct | % of Nominal | Float | Usable delivered capacity percentage relative to nominal nameplate | 97.8 |
| Inverter Quiescent Tare Loss | P_tare | Watts (W) | Float | Continuous internal standby power overhead of connected inverter | 35 |
| Connected Load Power | P_load | Watts (W) | Float | Appliance load supplied during backup discharge scenario | 50 |
| Idealized Autonomy Runtime | Hours_ideal | Hours | Float | Theoretical backup runtime assuming 0W tare losses and 100% nominal capacity | 24 |
| Actual Modeled Autonomy | Hours_real | Hours | Float | Actual achieved runtime factoring Peukert derating and continuous tare drain | 13.8 |
| Autonomy Runtime Loss Ratio | Loss_pct | % Loss | Float | Percentage runtime lost due to tare dissipation relative to ideal | 41.3 |
4. Sample Data Records Preview
Displaying 6 representative rows (Full dataset contains 15 Records)| chemistry | c rate | peukert k | effective cap ah | effective cap pct | tare w | load w | autonomy hours real | autonomy loss pct |
|---|---|---|---|---|---|---|---|---|
| Lead-Acid AGM | 0.05 | 1.25 | 100 | 100 | 35 | 50 | 14.1 | 41.2 |
| Lead-Acid AGM | 0.2 | 1.25 | 82.4 | 82.4 | 35 | 50 | 11.6 | 41.4 |
| Lead-Acid AGM | 0.5 | 1.25 | 68.1 | 68.1 | 35 | 50 | 9.6 | 41.1 |
| Lead-Acid Flooded | 0.2 | 1.3 | 79.4 | 79.4 | 35 | 50 | 11.2 | 41.4 |
| LiFePO4 | 0.2 | 1.04 | 99.2 | 99.2 | 35 | 50 | 14 | 41.2 |
| LiFePO4 | 1 | 1.04 | 95.8 | 95.8 | 35 | 50 | 13.5 | 41.3 |
5. Limitations & Engineering Disclaimer
This dataset is a deterministic engineering benchmark and simulation matrix. It is not certified laboratory test data, does not replace manufacturer warranty or specification sheets, does not guarantee real-world battery runtime under variable loads or temperatures, and does not constitute IEEE 485 or UL 1973 compliance certification.
6. Dataset Citation (BibTeX / APA / IEEE)
When referencing this dataset in academic preprints, technical reports, or computational tooling, please cite using the formal reference metadata below:
APA Style
IEEE Style
BibTeX Record
@dataset{powerlab_2026_bess_peukert_dataset,
author = {Miad S. and {PowerLab Clean Energy Engineering Group}},
title = {Stationary BESS Peukert Capacity Derating, C-Rate Kinetics, and Inverter Tare Loss Benchmark Matrix},
year = {2026},
publisher = {Figshare},
version = {1.0.0},
doi = {10.6084/m9.figshare.33821940},
url = {https://www.powelab.org/datasets/bess-peukert-capacity-derating-tare-loss-benchmark}
}