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About Maintenance

• 171.

  What degrades EV batteries?

  Several factors can cause an EV battery to degrade over time, affecting its overall performance and capacity. Some key factors include:

  
  

  ① Cyclic degradation: Each charge and discharge cycle will gradually reduce the capacity of the battery. Repeated charging and discharging can cause chemical and structural changes within the battery, causing its overall energy storage capacity to decrease.

  ② High temperature: Whether during operation or when parked in a hot environment, exposure to high temperatures will accelerate the degradation process. Increased temperatures promote chemical reactions within the battery, reducing its overall life and performance.

  ③ Fast charging: Fast or quick charging, while convenient, puts extra stress on the battery and causes it to degrade. Fast charging generates more heat and can cause chemical imbalances within the battery, ultimately shortening its life.

  ④ Deep discharge and overcharging: Allowing a battery to be fully discharged or charged beyond its capacity may stress the battery, causing irreversible damage and capacity loss.

  ⑤ Aging: Over time, no matter how used it is, the internal components of the battery will naturally degrade, causing its overall capacity and performance to decrease.

  To mitigate these factors and extend the life of EV batteries, manufacturers are continually working to improve battery chemistries, thermal management systems and charging protocols. Additionally, proper maintenance and following recommended charging and operating practices can help extend the life of your electric vehicle battery.

• 172.

  What are the risks of EV batteries?

  While electric vehicle batteries offer many advantages, they also present some risks that should be considered. Some potential risks associated with electric vehicle batteries include:
  
  ① Fire hazard: In rare cases, electric vehicle batteries may catch fire due to thermal runaway, which is a rapid, uncontrolled rise in temperature within the battery. Although modern electric vehicle batteries are designed with safety features that minimize the risk of fire, accidents can still happen, especially if they are severely damaged or mishandled.
  
  ② Chemical exposure: Electric vehicle batteries contain chemicals that may be dangerous if they come into direct contact with skin, eyes or the environment. Accidental exposure to these chemicals during battery maintenance, repair, or disposal may pose health risks.
  
  ③ Environmental impact: Improper disposal or recycling of electric vehicle batteries may lead to environmental pollution and the release of toxic substances into soil and water. Efforts are underway to improve EV battery recycling infrastructure to minimize these risks.
  
  ④ Supply chain challenges: The production of electric vehicle batteries relies on the extraction of raw materials such as lithium, cobalt and nickel, which may raise concerns about the environmental and social impacts of mining activities, including issues related to resource depletion and labor practices.
  
• 173.

  Is it OK to charge EV in rain?

  Charging an electric vehicle (EV) in the rain is generally safe as long as the charging equipment and EV charging ports are designed and installed to withstand sleeping.
• 174.

  Are EV batteries waterproof?

  Electric vehicle batteries are typically designed to be somewhat waterproof or waterproof, but not completely waterproof. While manufacturers take various measures to protect batteries from water intrusion and related damage, such as sealing the battery pack and its components within the vehicle structure, they cannot guarantee complete waterproofing in all circumstances.
  
  It’s important to note that prolonged exposure to or immersion in water can still pose a risk to the integrity and functionality of your electric vehicle battery. Water intrusion can cause short circuits, corrosion, and other electrical problems, compromising battery performance and safety.
  
• 175.

  Can EV batteries leak?

  While electric vehicle batteries are designed to be rugged and well-sealed, in some rare cases they can leak. Leaks are often associated with damage to the battery casing or internal components, which can be caused by accidents, manufacturing defects, or improper handling.
  
  If the battery casing is damaged due to physical damage or a manufacturing defect, the electrolyte (the chemical mixture that facilitates the flow of ions within the battery) can leak. The electrolyte is usually contained within a battery casing, which is designed to prevent leakage under normal operating conditions.
  
  If a battery leaks, it could be dangerous if the electrolyte comes into contact with skin, eyes, or the environment. Therefore, it is crucial to handle damaged EV batteries with extreme caution and follow appropriate safety protocols for containment and disposal.