Was great for a year and a half, now it's all swelled up

I've had this battery since Feb 2018 and it has been great. My Samsung batteries kept having the issue where the phone would shut down and restart repeatedly. This battery never did that and I felt like I had good life until recently. Today I just noticed that my phone wasn't laying flat anymore, and the battery is all swelled up and was even pushing on the screen from inside. So back to the old batteries for now, but I am going to try this battery again, because for $14 I think it's still a pretty good deal for 18 months worth of battery life.

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