I recently had a work laptop battery die. This was during COVID so I didn't want to deal with taking it to a place or having them send a technician. I told them to just mail me one and I'd do it myself. I assumed it would pop out like the picture and be easily replaced. It turned out that I needed a heat gun and had to get like 5 screws out, remove and replace a ribbon cable and a few other things. It was still doable, but thanks Dell for making that way harder than it had to be to sell services to people.

I don't know if this is gore or not...

I remember the psp battery being slightly rounded on one side to fit the console.

I remember one of the earliest ways to hack a PSP (to run custom firmware) was to use a pencil to draw on the PCB on the battery pack.

The PSP battery is curved, this isn't a failing battery. Also the battery is enclosed in hard plastic. There would be a large split where the clam shell is showing.

For anyone wondering 3.6V is about typically what the PS2 ran most of its component at (3.3 - 5V range), despite being a 12V device, mostly because the peripherals needed higher voltages (e.g. gamepad) which the PSP doesnt need

I ran one of those bad boys for thousands of hours and never had issue with one.

Hang on in there, little buddy.