Yea, I guess I was just unlucky as a majority of iFixit batteries don't do this? Either way, I don't think I care to take this further as even though this particular battery was hardly used, it was over 3 years old so I would think the warranty is over anyway, and I have since got rid of the evidence, I really don't need any fire-starters lying around. Also, I don't actually need a battery anymore in this machine as it is now only used as a coffee table DVD player.

On the other hand, maybe this is happening more than anyone cares to admit. I have some old cell phones from the 1990's, and while the batteries don't work at full capacity anymore, they do still work a bit, but most importantly, they are not swollen, at all. Of all the Li-Ion batteries I've ever handled, iFixit laptop batteries are the only ones that have done this.

No, I'm not fishing for any kind of compensation or the like, but hopefully this prompts better quality control going forward. Imagine aircraft or even electric car batteries did this...

It isn't? Then what is this comments section for? But ok, what to do with a swollen battery? Don't get one from iFixit and you won't have the problem of wondering what to do with it. Maybe some iFixit employees want to keep an eye in here to see what ex customers think of their products. Anyhow....

I have now removed the dud iFixit battery from my laptop and run it without one installed seeing as the machine doesn't go anywhere anyway. It is only used as a coffee table DVD player. So no, I don't think I trust iFixit batteries anymore. 3 strikes, and you're out!

Sad thing is I threw out the original battery which still worked for 2 or 3 hours. No swelling whatsoever after 10 years of solid use.

Bought a replacement battery for a 2011 MacBook Pro in 2020. Since then, the machine has barely been used, maybe 100 cycles. The rest of the time it lives under the coffee table. But last night I took it out to play a DVD and the whole mouse pad was almost pushed out by a swollen battery barely 2 years old. The original battery lasted 10 years and did over 2000 cycles.

So where does iFixit get their batteries? This is now the 3rd iFix battery between 2 laptops that has gone bad by swelling.