Battery health: a lever to support the transition to electric vehicles

MobilityCrédit Agricole Personal Finance & Mobility
Publication date 30.03.2026

In the context of the development of electric vehicles, battery health is becoming a key issue for mobility stakeholders.

Alexandre Gau, Director of Remarketing at CA Personal Finance & Mobility, explains the benefits of analyzing electric vehicle batteries to encourage drivers to adopt this new motorization.

Why is battery health strategic ?

Battery health, also known as State of Health (SoH), is a key indicator for evaluating an electric vehicle. Unlike internal combustion engines, battery wear does not depend solely on mileage but varies according to several factors related to vehicle usage, such as:

  • Charging habits
  • Weather conditions
  • Daily usage

Understanding these elements allows for greater transparency regarding the true value of vehicles and strengthens customer confidence in an electric car market that is still developing.

How is this diagnostic tool used with clients ?

For customers, having clear information on the battery’s state of health allows them to better anticipate the vehicle’s performance over time, particularly in the context of a lease with an option to buy. Knowing the state of health at the end of the contract helps them make informed decisions, such as exercising the purchase option with confidence.

For the Crédit Agricole group, this analysis is a strategic tool that allows them to:

  • Optimize vehicle management throughout their lifecycle;
  • Anticipate contract expirations and adapt remarketing strategies;
  • Direct each vehicle to the most relevant resale channel based on its actual condition.

Is the health of batteries useful for managing the second life of electric vehicles ?

Battery diagnostics are essential for defining the second life of electric vehicles. Solutions developed with partners like Bib Batteries allow for remote assessment of the State of Health (SoH), offering several advantages :

  • More accurate vehicle valuation
  • Guidance towards the right resale channels
  • Development of second-cycle strategies

This approach is part of a circular economy logic, by optimizing the use of vehicles over time.

Understanding the State of Health (SoH) helps structure the electric vehicle market, boosting user confidence and providing greater transparency about battery performance. Data shows that batteries age more slowly than expected, with an average loss of about 1 point of SoH per year, making it a reliable indicator for evaluating, financing, and reselling an electric vehicle.

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