Got 3 flashlights in the car.
One went dead. So, I removed the dead abtteries and never replaced them.
I carry a code scanner in each car so I can diagnose the yellow lights on the dash when they happen. (car repair tool)
I take the batteries out of them to prevent damage.
The other day I found that even being out of the device, the batteries had leaked.
Since they were not in the device, there was no damage.
But the batteries weren't usable so the device wasn't usable until I got some new ones.
One set of (nearly used up) hiking boots put in the car with slight sole delamination have now turned into about 50% delamination (might try regluing)
Car storage sure is tough on things!