The lifespan of batteries is the crucial question that plagues the mind of every buyer of a second-hand electric car. But rest assured, in most cases, a battery degrades more slowly than expected, provided it receives adequate treatment. If the future of electromobility makes you shudder, this article will enlighten you on this burning topic.
What is referred to as “ageing”
Over time, all batteries, like a fine wine, lose some of their capacity. This phenomenon, often referred to as ageing, leads to an inevitable decrease in real range. In other words, if you were used to travelling 300 kilometres on a full charge, expect that figure to be revised downwards. Furthermore, the charging speed may also vary depending on the car model. A little reminder: an ageing battery may take longer to recharge, which is not necessarily good news for your tight schedule.
Warranties: what they generally cover
The good news for potential buyers is that many manufacturers offer extended warranties on batteries, often linked to a state of health (SoH) threshold. These warranties can last up to eight years or 160,000 kilometres, depending on the brand and model. However, it is essential to read the exact terms: some stipulate that intensive use or lack of maintenance may void the coverage. Be sure to ask the right questions before signing anything.
SoH: the measure to know when buying second-hand
- High SoH: indicates a capacity close to the original, ideal for those wishing to maximise their range.
- Lower SoH: signals reduced range. This may be acceptable for urban use, but be cautious if you are planning longer trips.
Habits that prolong lifespan
To ensure your battery lives a long and happy life, here are some habits to adopt:
- Charge mainly at home charging: it is less stressful for the battery and often more economical.
- Limit fast charging to when necessary: even though it is tempting, this option can be detrimental to your battery’s longevity.
- Avoid prolonged storage at 100%: keeping a full charge for too long can damage the battery. Try to keep it between 20 and 80% if possible.
To remember
- The battery ages: this is normal, but often in a gradual manner.
- When buying second-hand, check the state of health (SoH) if possible before purchasing.
- Gentle usage combined with smart charging are the keys to optimising your battery’s longevity.
In summary, if you are considering purchasing a second-hand electric car, keep these tips in mind. With a bit of diligence and care, you can enjoy satisfactory range and a healthy battery for many years. To deepen your knowledge and discover more practical tips, feel free to check out our Guides & Maintenance section.
