Can anyone recommend a good replacement battery for GBA SP?

I see a few aftermarket solutions online. Does anyone have any particular experience or recommendations on one that works best? I imagine OEM batteries are pretty much gone for good, so I’m stuck with a 3rd party solution.

deja vu…

the battery I bought and mention in this older thread is still going strong!


But perhaps more relevant recent knowledge, you can build your own battery

Gah… I’m losing my mind lol. Sorry for the duplicate thread.