In the electric vehicle sector, Lithium Iron Phosphate (LFP) batteries are known for their low cost, safety and long life. LFP batteries, which are more durable than traditional Nickel-Manganese-Cobalt (NMC) batteries, are often preferred in entry-level models. Because these batteries have a lower energy density, vehicle manufacturers often recommend charging them to 100 percent. However, a new study published in the “Journal of The Electrochemical Society” last week has raised some questions about this common practice. Here are the details of the study…
New research shakes up what we know about EV charging: Full charging can be dangerous
EV manufacturers often recommend charging their vehicles to 100 percent. Tesla, for example, recommends a full charge once a week, while Ford recommends a full charge once a month. This is said to help calibrate the battery and increase the accuracy of range estimates displayed on the vehicle’s dashboard.
However, a new study published last week in the Journal of The Electrochemical Society has raised some questions about this common practice, suggesting that frequent charging of LFP batteries to high charge levels may negatively impact battery life.
Researchers have discovered that harmful compounds form inside fully charged LFP batteries . These compounds form under high voltage and temperature and, over time, accumulate on the battery’s negative electrode, depleting lithium reserves. This process can cause the battery to age and degrade its performance.
One of the most interesting findings of the study is that using LFP batteries in 0-25 percent charge cycles can extend battery life. However, this low charge range is not practical for most electric vehicle users.
This charging strategy is not very useful, especially during long journeys or in winter when the range is reduced. The authors also note that this method requires a balance between extending the battery life and usable capacity, and is therefore not a suitable solution for real-world use.
The new findings in the study question current industry recommendations for charging LFP batteries, and are an important warning for electric vehicle owners. According to the study, electric vehicle owners are advised to use a more balanced charge instead of a 100 percent charge to ensure long-lasting batteries . However, there are still questions about the applicability of this balanced approach in daily life.
You can access the article with the details of the research here . What do you think? You can write your opinions in the comments section below.
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