Benchmark Matrix: Residential BESS Cycle-Life Degradation, Calendar Aging, and Ambient Temperature Derating

Physical Motivation & Scope</p><p dir="ltr">This benchmark dataset provides empirical and deterministic degradation matrices for stationary residential Battery Energy Storage Systems (BESS), evaluating electrochemical capacity retention (%), internal resistance growth ratio (R_growth), and calendar fade across lithium iron phosphate (LiFePO4) and nickel manganese cobalt (NMC) chemistries. </p><p><br></p><p dir="ltr">It tabulates performance across equivalent full cycles (500 to 6,000 EFC), depth-of-discharge boundaries (50%, 80%, 100% DoD), and extreme ambient thermal ranges (-10°C to +45°C / 14°F to 113°F).</p><p><br></p><p dir="ltr">### 2.

Tabular Schema Codebook</p><p dir="ltr">* `chemistry`: Battery cell chemistry (`LiFePO4` vs `NMC`).</p><p dir="ltr">* `cycles_efc`: Equivalent Full Cycles completed.</p><p dir="ltr">* `dod_pct`: Operational Depth of Discharge boundary (%).</p><p dir="ltr">* `ambient_temp_c`: Ambient operating dry-bulb temperature in Celsius (°C).</p><p dir="ltr">* `ambient_temp_f`: Ambient operating dry-bulb temperature in Fahrenheit (°F).</p><p dir="ltr">* `capacity_retention_pct`: Usable capacity retained relative to nameplate rating (%).</p><p dir="ltr">* `internal_resistance_growth_ratio`: Internal ohmic resistance multiplier (R_actual / R_nominal).</p><p dir="ltr">* `annual_calendar_fade_pct`: Parasitic calendar aging degradation rate per year (%/year).</p><p dir="ltr">* `operational_status`: Health classification (`Active`, `Sub-80% EOL`, `Cold Derated`, `Thermal Acceleration`).</p><p><br></p><p dir="ltr">### 3.