This computer model was introduced in September 2016.
The battery is aging (getting old) -- the performance will not be that of a new battery.
The battery might benefit from calibration.
More likely, it is time to replace the battery.
Information / Tests
HP forum thread on the subject
Accepted Solution - Battery won't Charge or Battery won't Hold a Charge
Article that explains Smart Battery Technology
Battery use and care, how batteries perform over time, and expected battery life
How to: Understanding Lithium-Ion and Smart Battery Technology
Battery having trouble?
The battery might be OK and just need calibration (balance / set).
The steps to check / calibrate / replace the battery are included in this document:
HP Notebook PCs - HP Battery Alert Appears Before Windows Starts
And / Or
Testing and Calibrating the Battery (Windows 10)
Document includes information and link for using HP PC Hardware Diagnostics (UEFI) (preferred method) and / or using the HP Support Assistant to test the battery.
Tips for extending / improving battery service
Microsoft - Battery saving tips
Additional Information
Check for parts at the PartSurfer Website
Open PartSurfer
- Select your Country
- Enter your device Product Number, Serial Number, or Part Number in the Quick Search box
- HINT: To see a system-specific list, replace the Product Number with your device Serial Number
- Items accompanied by a tiny box in the Add-to-Cart column are available for purchase
Parts marked as available for purchase might be available from: HP Parts Store
OR
Use your search engine to find the part number at your favorite online store.
References
Page 17: Part Number: 849909-855
Page 31: Battery Replacement Procedure
Device Homepage
Drivers / Software and BIOS, Videos, Advisories, How-to, Troubleshooting, Manuals, Product Information, more
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