Q:

HP laptop not charging over 86%, dies at 50% without warning

I'm running Windows 10 on an HP laptop. I always have to keep it charging because it doesn't charge past 86%, and it turns off itself at around 50% without any warning. Is this a problem with the battery or power settings?

A:

Seems like you need to run the Battery Test and Calibration.  
Check out - https://support.hp.com/us-en/document/c00821536
Should correct the issue, or at least tell you if your battery is toast.

