you go blind
Zitch, Zip, Nada. {Nothing}
They mostly are likely to become very clean. In general, avoid having batteries in the washer.
it pops
Gees you get paint on your eyes
because it happens twice a year so you will always have fresh batteries put in every six months.
First try turning it on. Are your batteries dead?
If you put the batteries in a flashlight in the wrong direction, the electrical current won't flow properly, preventing the flashlight from turning on. It's important to insert the batteries according to the correct polarity indicated on the device to ensure it functions correctly.
You could put the batteries in a very hot and sunny place where the sunlight could charge it.
it gets soften
It smells like hot death.
It gets numb.
It gets warmer!