Gnome is constantly switching(the icon) between battery powered to charging. And the charging estimate is bad + battery estimate as well(it will show like 150 hours left until full charge).
How can I deal with that? Should I just find a way to limit it from Linux and set it to 100% in Bios?
Hi! 
What wattage charger are you using if i may ask?
Gnome is a little quirky when it comes to indicating charge. If you’re trickle charging (in the range of 1-25 watts) it doesn’t really know what to do; so it just displays that your battery life is way past what should be possible. I have this with a PD USB-C port on my monitor.
Hope this helps~ 
I’m just using the normal charger. What happens is that gnome thinks it is going to take a hundred+ hours to fully charge (but at the same time, the battery is at the limit set in the bios)