Battery box looking thing in the trunk

[DonDDR]

What is the black box in the trunk bolted up under the package shelf?

 

[Irish Pride]

Factory Sub box.

 

[DonDDR]

So if I take it out on a whim the stereo gunna not work? I am going on a long trip tomorrow and my shit is just 2 inches from fitting.

 

[intimdatr]

Pulling it will have Zero effect on the rest of the sound system.