The first signs of battery degradation in an electric car are a reduced range, longer charging times, and irregular battery percentages on the dashboard. You’ll also notice that the battery becomes more sensitive to temperature fluctuations. These signals develop gradually but become clearer as the battery ages and has gone through more charging cycles.
What signals indicate that your EV battery is deteriorating?
The most noticeable signal of battery degradation is a shorter range than you’re used to. If you could normally drive 300 kilometers and now only achieve 250 kilometers with a full battery, that’s a clear sign. This difference becomes especially noticeable on longer trips that you previously completed without problems.
Other concrete warning signals are:
- Longer charging times – Your battery needs more time to charge completely.
- Irregular battery percentages – The percentage suddenly jumps up or down.
- Temperature sensitivity – In cold or warm weather, you lose much more range than before.
- Faster depletion – The battery runs out faster, even when the car is stationary.
Pay special attention when these signals occur together. Occasionally having less range due to cold weather is normal, but structural changes indicate battery degradation.
How quickly does an electric car battery normally deteriorate?
A healthy EV battery loses 2-3% of its capacity per year under normal circumstances. After 8 years, a well-maintained battery still has approximately 75-80% of its original capacity. This is a gradual process that you hardly notice at first.
Various factors influence the wear of your battery:
- Driving style – Frequent fast charging and aggressive driving accelerate degradation.
- Climate – Extreme cold and heat are bad for battery lifespan.
- Charging habits – Constantly charging to 100% or depleting to 0% is harmful.
- Mileage – More driving means more charging cycles and more wear.
Be concerned if your battery loses more than 5% per year or suddenly loses much capacity. Then it’s wise to have a professional diagnosis performed.
What can you do to slow down battery degradation?
The most important thing you can do is charge smartly between 20-80% of the battery capacity. Don’t charge to 100% every day unless you’re taking a long trip, and don’t regularly let the battery drop below 10%. This significantly limits the stress on the battery cells.
Practical tips for longer battery life:
| Area | What to do | What to avoid |
|---|---|---|
| Charging | Charge between 20-80%, slow charging at home | Daily charging to 100%, frequent fast charging |
| Parking | Seek shade, use a garage | Parking in full sun or extreme cold for long periods |
| Driving style | Smooth acceleration, regenerative braking | Aggressive driving, constantly driving at top speed |
Temperature management is also important. Park your car in shade or in a garage whenever possible. In extreme temperatures, you can turn on the climate control while the car is still connected to the charger.
When should you have an electric car battery checked?
Have your battery checked if you lose more than 20% range within a year, or if charging time suddenly becomes much longer. Also, with error messages on the dashboard or unexpected failure, a professional diagnosis is needed.
Clear signals for a battery test:
- The range drops faster than 5% per year.
- The car gives battery warnings or error codes.
- Charging stops unexpectedly or no longer works.
- There are large differences between estimated and actual range.
- The battery becomes extremely hot while driving.
During a professional battery test, the actual capacity is measured and compared with the original specifications. The specialist can also check if individual cells are damaged and provide advice on repair or replacement. Maintenance of electric vehicles requires specific knowledge and equipment.
How Autobedrijven Verdonk helps with electric car battery problems
We are specialized in hybrid and electric cars and have specifically trained our employees for EV diagnosis and maintenance. With modern test equipment, we can accurately determine the condition of your battery and provide advice on the best approach.
Our services for electric cars:
- Battery diagnosis – Comprehensive test of battery capacity and cell condition.
- Charging system check – Investigation of charging problems and efficiency.
- Regenerative brake system – Check and optimization of energy recovery.
- High-voltage systems – Safe diagnosis of electrical components.
- Electric drivetrain maintenance – Specific maintenance intervals for EVs.
We have extensive experience with electric Renault, Peugeot, and Citroën models, but can also investigate and maintain other EV brands. Autobedrijven Verdonk also performs maintenance and repair for all other car brands.
Would you like to have your electric car checked or do you have questions about battery degradation? Please feel free to contact us or visit us in Veldhoven. Read more about our history and discover why we have been a reliable partner for motorists in the region for more than 95 years.