If you’re having trouble finding a battery due to OEM only choices, here’s an anecdote that may help: I used thinkwiki years ago to get info on flashing the em

If you’re having trouble finding a battery due to OEM only choices, here’s an anecdote that may help: I used thinkwiki years ago to get info on flashing the embedded controller firmware of my T430s to a patched version that didn’t query batteries for authenticity, opening up a whole new world of prior gen and cheap aftermarket battery compatibility... perhaps the same can be done with your X230?