This battery worked for less than one year. I bought it and forgot it and then my computer (ThinkPad E420) started to mysteriously shut down, black screen, no warning. I almost bought a new computer thinking it was a major issue - turns out it was this poor quality battery triggering a hard shutdown :( I took the battery out and just plugged in my computer straight to the wall and it's totally fine now. No new laptop needed, just a better battery!
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