While most electric vehicle owners know the importance of keeping their cars away from water sources, they may not fully understand the potential impact of water damage on their batteries. EV lithium-ion batteries are not supposed to come into contact with water. This can cause serious damage to the battery and create safety hazards for the occupants. Lithium-ion batteries exposed to water can cause a chemical reaction that produces flammable gases, leading to the battery catching fire or exploding. It can also cause corrosion, short circuits, and harm the vehicle and its occupants. To minimize the risk of water damage to EV batteries, manufacturers use a combination of design features and protective measures to keep water out of the battery pack and take precautions to determine when there is a breach, such as installing a water leak detection sensor inside the battery pack compartment.