Is it bad to fully charge the battery of electric vehicles?
There are those who say that it is bad to fully charge the EV battery, however, doing so is not strictly harmful, but doing this practice frequently can affect the life of the battery.
Most EVs use lithium-ion batteries, which degrade over time due to factors such as repeated use, heat exposure, and full charge cycles.
Although fully charging the vehicle may seem like the best option to take advantage of the car’s full range, it is advisable to take certain precautions to extend the life of the battery.
Battery degradation
A full charge increases the voltage inside the battery, which can put more stress on its chemicals. The longer the battery is kept charged to 100%, the faster the degradation will be. Experts recommend keeping the charge level between 20% and 80% for daily use, as this range minimizes stress on the battery and thus prolongs its lifespan.
In fact, many EV manufacturers have developed battery management systems that limit charging to a certain level to prevent users from constantly charging them to 100%.
Benefits of Partially Charging
Keeping the battery within the recommended range not only extends its lifespan but also improves its efficiency in the long run. Partial charges are healthier for the battery and allow the vehicle to maintain optimal performance for more years.
This does not mean that full charges cannot be carried out occasionally if necessary. For example, if we have a long trip ahead of us in which charging points are scarce, we can charge the battery completely to make the most of its capacity, but it is not necessary for daily use if the journey to be traveled is within the range of the partially charged battery.
Fast charging and its impact
Another factor to consider is the type of load. Using DC Fast Charging stations frequently can also accelerate battery degradation, as they generate more heat during the charging process, which is detrimental to lithium-ion batteries. As such, it’s best to reserve fast charging for emergencies or when fast charging is needed, and opt for slow or moderate charging at home or at regular charging stations.
In conclusion, while charging at 100% is not bad occasionally, it is advisable to avoid doing it constantly. Opting for partial charges and avoiding excessive use of fast charging can help maximize the durability and performance of an EV battery over time.