system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where does ground go in a car battery?

So just a little background information: I understand almost nothing about electricity except for the fact that it is essentially the manipulation of electrons to do work. I understand that in residential applications earth ground is used to move high potential electrons to a lower potential in the event of a appliance short or something along the lines of that and it makes sense to me since earth ground is massive and i can imagine it holding a lot of electrons, however what dose not make sense to me is how a car battery works.

I understand that electricity is generated or "introduced" into cars by the alternator which charges the battery and when any component inside the car needs energy a relay is switched and applies a ground to that component for high potential electrons to pass through the load and into the low potential battery ground post or chassis ground which also leads to battery ground.

However, I know this I might sound silly or stupid but, what the \*\*\*\* happens from there? After the electrons enter battery ground what happens?

Do they get recycled(turn into high potential)? If so how?

Do they travel to earth ground or something?

If not how can the battery hold so many low potential electrons without exploding or something?

&#x200B;

Honestly I have no clue. Please take it easy on me with the vocabulary.
gpt
The battery is the pond, the frame is ground, and the alternator is a pump. The flow runs to the sprinklers, and trickles back to the pond through the ground.

Batteries are part of a closed circuit. Cars complete the circuits using the metal body and frame.

It would be too much extra copper wire to have every circuit be fully wired, so the battery (-) is connected by a heavy gauge wire to the frame. The battery (+) is fused, and the current runs out to do whatever job it needs to do, and then is grounded to the frame and back to the battery.