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I replaced the battery myself last year November, It had been working fine until now....

Last 6 Months, I left my Surface Book 2 on desk and I took my another Surface Pro for to-go. That was why I enabled Battery Limit in the UEFI(/BIOS) settings and limit the maximum charge to 50%.

Yesterday, I disable Battery Limit and let it charge to 100% overnight. But it stuck at 88%. Battery status shows that Battery 1(Tablet part) stuck at 50%. Battery Report Battery 1 Charging status in Linux Battery Charging status in Windows 11 I've try all that I could think of:

``` Enable & Disable Battery Limit again

Charge it while completely shutdown

Detach the tablet part and charge it with a Surface Cable alone.

Charge it with USB-C

Charge it while running Linux

```

Both of the Battery shows healthy in Battery report, not much wear have got.

I suspect it's either the EC on the motherboard or the Power Management chip on the Battery 1 is malfunction, it doesn't disable Battery Limit like Battery 2 does.

It could also be a faulty battery I got But I think you should be aware of this issue.