RE: Dell xps 15 - Battery won't charge over 99%
Thank you for writing to Dell Community Forum.
Please update the BIOS and chipset driver from our Dell Support site.
Was there any recent hardware or software changes?
What is the status of the battery and adapter in BIOS <F2>?
Please private message us the service tag of the system along with your email id.
To private message: please click my DELL-username and send me a Private Message
(Note: please don't mention the service tag or email id on the public forum as it contains your personal information).