Calendar ageing is not the sole factor that contributes to battery ageing. It is most likely the primary deterioration process for electric car batteries, however the status of battery charge and exposure to severe temperatures also have a significant influence on battery life.
When parked, limit your exposure to exceptionally high temperatures:
The most common threat arises when exposed to severe heat when parked disconnected. An automatic temperature management system placed in your electric vehicle may drain your batteries unnecessarily in order to maintain maximum performance. While this performance should only be used when your electric vehicle is on the road and utilising its battery, park your electric vehicle in the shade or plug it in so that its thermal management system only uses grid power, and ensure a steady range of temperatures throughout operation.
Reduce the number of batteries at full charge:
Electric vehicles currently have a battery management mechanism that prevents them from being charged and drained at the maximum level of charge. Maintaining the level of battery charge, from 0% to 100%, enhances the performance of your vehicle's battery life. Even while a full charge gives you the most running time, it is never a smart idea for your battery's overall longevity.
Do not use quick charging:
If your batteries are about to die, using a quick charger is a huge time saver. However, it injects a large amount of current into the batteries in a short period of time, which stresses and depletes your EV battery faster. While it is difficult to see the degradation, eight years of regular charging will offer you 10% greater battery life than eight years of rapid charging.
Maintain the best possible battery charge status for long-term storage:
EVs that are parked or stored with a full or empty battery damage the battery as well. If you don't use your electric car frequently or have a lengthy journey planned, invest in a timed charger and plug it in. If you leave your vehicle at full charge while parked somewhere for an extended length of time, the battery will struggle to maintain its level of charge while you are gone. One technique is to set the charger to retain the charge just over the low point, rather than filling it all the way to the full capacity, with an average charge level between 25% and 75%.