Can the car battery still be used if the car is not driven for three months?

[PaisleyLynn]

It is very likely that the battery is already dead. Leaving a car unused for a long time can have adverse effects on its health. Generally, the following impacts may occur: 1. Tire deformation: When the vehicle is started again, a noticeable rolling impact may be felt because the part of the tire that has been pressed against the ground for a long time has flattened and will take some time to regain its shape. 2. Significant self-discharge loss of the battery: When self-discharge reaches a certain level, the battery will be undercharged, leading to sulfation of the battery plates and shortening its lifespan. Therefore, even if the vehicle is not used for a long time, it is best to start it once a week and charge the battery for a while, which is beneficial for the vehicle's health.