Does a laptop stop working if you don't use it for a few months?
You should probably charge it, otherwise it should work great top
The battery may be empty / irreparably discharged. Besides that, everything is okay
No, there's no reason for danger!
You just have to recharge it 😉
(Doesn't matter even after 5 years)
If it hasn't exploded by then xD
Have fun by the side
Why do you think it wouldn't work anymore? Sure the battery is empty, but from standing around the thing doesn't break
Basically, of course, it still works