this post was submitted on 21 Jan 2024
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I only ask because the bulging seems slight enough that I'm not 100% certain that's not just how the battery is supposed to look.

This is inside a Lenovo ideapad flex 4. I only opened it to replace the hard drive.

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[–] synapse1278 3 points 10 months ago

The top-right part looks suspicious, but I don't know if you should be concerned about it or not. Once you put your computer back together, try to monitor how hot this location gets while charging, compare to the other sections of the battery. If you can't tell a difference to the touch, it's probably fine. If it gets noticeably hotter, I recommend to change the battery asap.