

Is my 3ds case broken or is it the battery
Hi all,
I am not the most skilled when it comes to tech, but I recently started playing on my new 3dsXL after years of it sitting away.
I noticed today when I picked it up, it looks like the case has melted a bit(?) and the back is a bit bigger.
Now immediately I worried that it was the battery (I have experience with laptop batteries being a time bomb) and that I would have to replace it
There seems to be a weird indent too where the scratch is, I have never noticed it before today. If anyone has any advice on weather I should replace the battery or any way to replace the back please let me know!
Thank you in advance :)