What are the effects of a dead battery on a car?
2 Answers
A dead battery directly affects the car by making it unable to start, and the vehicle's anti-theft system will also fail to function properly. For the engine to start normally, it requires spark, gasoline, air, and the starter motor to turn the engine. If the battery is dead, there will be no electricity in the high-voltage coil, preventing the spark plugs from firing correctly. When the battery is dead, the fuel pump also cannot operate normally, which means fuel supply cannot be ensured, and the starter motor won't be able to turn the engine. When the car is not in use for an extended period, it is recommended to disconnect the negative terminal of the battery to avoid complete discharge. If the car is unused for a long time, you can drive it occasionally to allow the battery to recharge.
Last time my car battery died completely, the whole experience was awful: turning the key got no response, the engine was dead silent, the dashboard and headlights were completely dark—I couldn't even unlock the doors. That time, I was rushing to work but got stuck in the parking lot and had to take a taxi, making me late. What's worse, all the electronic devices were down: the AC couldn't blow any air, making it unbearably stuffy in summer, the radio was mute, and the navigation failed. Deep discharge also damaged the battery's internal plates, reducing its lifespan, forcing me to spend over a thousand later to replace it. The car's computer lost the seat memory, and the anti-theft system malfunctioned, increasing potential risks. Now I regularly check the voltage to keep it above 12.6V as a preventive measure.
