I had some major battery and charging issues while sleeping with 2 older macs that were a challenge to isolate. It turned out that in one case, the charging bri

I had some major battery and charging issues while sleeping with 2 older macs that were a challenge to isolate. It turned out that in one case, the charging brick itself had started having problems and couldn't keep up with how quickly docker was demanding power. Got that replaced under warranty. The other was just a straight-up hardware issue with the computer. I'd close the lid close to a low battery and let it stay closed long enough for it to hibernate, and then when I'd open it back up it will have completely drained and I'd get a kernal panic. They replaced it after quite a lot of back and forth until I was able to prove it.