The battery is there. They detect electrolyte spillage. Here's writeup pdf https://www.nhtsa.gov/sites/nhtsa.gov/files/2022-05/Test-Procedure-305-02-February-2022-tag.pdf
You can shut off a/c and run the fan on High for a few minutes, before being done with the truck.
I do this every time with every vehicle I have owned and never had a problem.
Some car makers tell the BCM to do this automatically.
You should . You know you should.
Otherwise, it won't be stripes all the way down.
Make it perfectly striped, so that you may feel good knowing it's so.
Make no mistake, there's a tiny 12 volt battery powering everything except the drive motors, and the 12v battery doesn't get charged unless the truck is On.
But compared to the tiny LEDs, it is massive.