Thinkpad P51s: If not I can just return battery.
I have a p51s bought a generic battery anyone know how to get battery charging working properly? If not I can just return battery.
You're probably better off returning the battery since it's not working. Some of those third party batteries turn out to be duds even if the machine can use it. And then get a genuine battery.
And yeah, I know that's paying a battery tax, but that's the way it is with any brand. 🙁