Story perspectives

Study Reveals Electric Vehicle Batteries Lose 2.3% Capacity Annually

1/14/2026

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Summary

Story summary

Geotab, a data analytics company, studied more than 22,700 electric vehicles and found battery degradation averages 2.3% per year, leaving 81.6% capacity after eight years.
Charging habits significantly affect battery health, with frequent use of high-powered chargers over 100 kW doubling degradation rates versus slower charging.
Modern electric vehicles are designed with safeguards to mitigate degradation and sustain performance.
Drivers are encouraged to balance charging methods to optimize battery life.

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Story summary

Geotab, a data analytics company, studied more than 22,700 electric vehicles and found battery degradation averages 2.3% per year, leaving 81.6% capacity after eight years.
Charging habits significantly affect battery health, with frequent use of high-powered chargers over 100 kW doubling degradation rates versus slower charging.
Modern electric vehicles are designed with safeguards to mitigate degradation and sustain performance.
Drivers are encouraged to balance charging methods to optimize battery life.