Already done ;)

I did it a long time ago, maybe a few years after I got it back when the battery needed to be a specific one in order to work.

I updated the custom firmware when I brought it with me last year and also got a much larger memory stick.

I had a look at the process and I don’t think I will even attempt it.

I might be able to get it replaced at a store though, but it will be costly.

I still have 2 of these.

Bought a new battery for my PSP after getting it back from my parents’ place, I moved to another country and left it behind originally. I also rescued my original PlayStation.

Found my iPod Nano and it needs a new battery unfortunately.