For anyone still running these older ThinkPads, where do you get new batteries from? I've not yet replaced any of mine but the aftermarket world for these seems rife with super-sketchy knockoffs that I'm certain will not be trustworthy. Any recommendations for known-good manufacturers of batteries for X230-X270 era? I'm in NA but I don't really care where I have to order from, I just want batteries that actually even vaguely resemble OEM reliability.
Edit: Ohh I see someone started a thread on this already: https://news.ycombinator.com/item?id=50340218