What If Electric Car Battery Dies. So my car battery died 4 months ago while it was unused in my garage during the summer interior dome light left on for months. The ideal would be to take the whole battery apart clean up the material and recycle them back to battery-grade Reprinted from Greenwire with permission from Environment.

Allow the car to run for at least 20 minutes to charge the dead battery. You can now disconnect the cables. Once an EV battery loses its capacity to power a vehicle it can be used to power a home or building by contributing to a battery storage system.
To find out just what happens when the battery goes dead.
The car will warn you about the dropping battery percentage in the instrument cluster. Then as the cars got drained the whole system restricts power forcing the driver to pull up to a safe spot. You can now disconnect the cables. The ideal would be to take the whole battery apart clean up the material and recycle them back to battery-grade Reprinted from Greenwire with permission from Environment.
