Battery doesn't charge above 90%

[Hasodikis]

A few days ago I bought a used T460 and hackintoshed it (my repo is here: https://github.com/Hasodikis/ThinkPad_t460_Hackintosh_OpenCore).

The only problem I have so far is a bit strange.
In BigSur 11.1, 11.2 and 11.2.1 my battery does not charge above 90%.
Its health is at around 88-92 % (it fluctuates with the number of charging cycles every 5-10 boots)) and it doesn't charge above 90% no matter what I do.
I haven't used YogaSMC, I only use Thinkpad Assistant. I haven't applied any charging thresholds.
And the behavior persists even if I disable Optimized Battery Charging in System Preferences -> Battery .

This is a screenshot form coconut battery:

Does this happen to you to? If not, any idea on the causes?