EV Battery Lifespan & 20-80% Charge Optimizer

NMC / LFP Cycle Engine

Vehicle & Charging Parameters

2019 Tesla Model 3 Long Range (NMC)
Active State of Charge (SoC) Window 20% - 80% SoC
0% 20% Min 80% Max 100%
NMC Insight: High state of charge (>80%) causes cathode electrolyte interphase (CEI) thickening and electrolyte oxidation under elevated temperatures. Keeping standard daily charging at 80% (or 70% in hot summer) preserves peak battery health.

10-Year Projected Capacity Retention

20-80% Optimal Policy vs 100% Abuse
Configured Strategy (Your Habit)
100% Daily Abuse Baseline
Warranty Floor (70% Retention)
Projected Degradation
4.2%
at year 5 (56,000 km equivalent)
Retained Pack Capacity
71.5 kWh
Original usable pack: 74.6 kWh
Estimated Pack Life
14.5 Years
Before dropping below 70% SOH
Recommended Target
80% (Winter Peace of Mind)
Covers ~280 km daily buffer
Optimal Health Preservation
Export JSON ready

By maintaining a 20% to 80% charging window, calendar aging and cyclic strain remain minimal. Over 5 years of typical driving (45 km/day), total pack capacity loss is limited to 4.2%, preserving 71.5 kWh of usable energy and extending total useful life to 14.5 years.

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