Once you get 3.0 or lower on the common CR2032 this is not uncommon. Here's a recent discussion about that battery.
https://www.cnet.com/forums/discussions/no-beep-even-without-a-ram/
My laptop hasn’t been turning on once I put it to sleep or once it is turned off so I looked up tips on how to make it start. I did the standard CMOS battery removal and disconnecting the main battery, and it turns on. However, I kept running into this issue. It is a hassle removing the bottom cover and disconnecting the battery every time I want to use my laptop. I bought a brand new battery to replace my old one and it seemed to be working just fine. Unfortunately, I am still having the same issue and cannot start my laptop without unplugging everything in the back. Any idea(s) what might be wrong and how to fix it?? Thanks
-Tony

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