Replacement laptop batteries

My Thinkpad needs a new battery. I’ve been looking, and there are lots of aftermarket non-OEM alternatives that are way cheaper than the official model. Replacement batteries seem like exactly the kind of thing that OEMs would price gouge for just to take advantage of consumers who don’t know any better, but I also don’t want to end up with an off-brand exploding piece of crap.

Does anyone have experience knowing which aftermarket battery brands are high quality?