Geotab Reveals EV Batteries now Lasting More Than 20 Years

Geotab Inc., a global leader in connected transportation solutions, has released data indicating that EV batteries have lasted 20 years or more. The revelation challenges long-standing concerns about EV battery longevity and highlights the advancements in battery technology.

In-depth analysis of EV battery health

Geotab analysed the battery health of nearly 5,000 fleet and private EVs, gathering almost 1.5 million days of telematics data.

The extensive analysis showed that EV batteries degrade at an average rate of 1.8% annually. It marks an improvement from Geotab's 2019 analysis, in which the average degradation rate was 2.3%.

Notably, EV batteries are degrading more slowly than internal combustion engine (ICE) drivetrain components, underscoring their long-term durability.

David Savage, Vice President for the UK and Ireland at Geotab, notes:

"With these higher levels of sustained health, batteries in the latest EV models will comfortably outlast the usable life of the vehicle and will likely not need to be replaced."

Dispelling myths about EV battery reliability

Despite the improved data on EV battery health, concerns about battery reliability persist. However, Geotab's findings suggest that a 1.8% annual decline in battery health is unlikely to affect most drivers' daily needs significantly.

Savage adds, "People should feel confident that many current EVs are suitable and cost-effective to replace a range of light, medium and heavy-duty ICE vehicles."

Geotab's recent report, "Taking Charge: On the Road to an EV Future," found that two-thirds of vehicles operated by private and public sector organisations in the UK are ready to transition to electric. The report indicates that fleets could save an average of £13,279 per vehicle over seven years by replacing ICE vehicles with EVs.

Understanding battery degradation

Battery degradation is a natural process that gradually reduces a battery's ability to store energy. In EVs, the power degradation is rarely noticeable since the batteries can generally deliver more power than the powertrain components can handle.

The main concern is the battery's ability to store energy, referred to as its state of health (SOH). Batteries start at 100% SOH and deteriorate over time. For instance, a 60 kWh battery with 90% SOH would function like a 54 kWh battery.

Geotab's analysis identified the best-performing EV models with a degradation rate as low as 1.0%. Variations in battery chemistry and thermal management of the battery pack contribute to differences in degradation rates among vehicle models.

Most EVs use lithium-ion batteries, but various lithium-ion chemistries influence how the battery responds to stress. Additionally, temperature control methods, whether air or liquid, play a crucial role in battery longevity.

High-use EVs show strong battery performance

One surprising insight from Geotab's research is that high-use EVs did not exhibit significantly higher battery degradation. It is particularly encouraging for fleet operators, as it suggests that EVs offer better value the more they are driven.

The importance of EV battery data

Access to accurate state-of-health information, facilitated by comprehensive telematics data, is essential for optimising the use of electric vehicles.

Telematics data insights, available in Geotab's EV Battery Health report, help fleets understand their EVs' real battery capacity, track the rate of degradation and maximise their EVs' value throughout their lifecycle.

By leveraging this data, individual owners and fleet operators can make informed decisions, ensuring they get the most out of their EVs while contributing to a more sustainable future.

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