

Cooler spill when camping; ‘25 Ultimate Hybrid
My dad accidentally yanked the cooler valve when pulling out our camping chair, noticed the spill when our bags got wet. Im concerned whether this spill will affect our hybrid battery or not? This pic is 2 days old, and we had dried it the same day. The car was perfectly fine when driving back (about 350km journey). I got about 16.5kmpl when driving back and it kept switching to EV normally so Im assuming its all well. Just wanted to ask if there is anything i should get checked out or I’ll be fine?
Also, I found this unknown device stuck in the bottom corner (2nd Image). I accidentally got my hands on it when drying the trunk. Any idea what it is?