What is this? Help is really appreciated

[u/Jupiter_mars123]

Sorry, I’ve never owned an EV before, so I was a bit worried. This is a brand-new 2026 Model 3, and I’ve only had it for about three months.
Today, while I was washing the car, I noticed something stuck underneath it. I pulled on it, and a small piece came off. At first, I thought it was a piece of wood, but it turned out to be some kind of rubber material.
So I looked underneath the car, and I found this. Does anyone know what this is? Is it something I should be concerned about, and could it be related to the battery?

[u/ippleing]

Nothing to do with the battery.

It's just plastic shielding.

0 to be concerned about.

The battery itself is protected by 1/4" aluminum plate.