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Guidelines
Here is the solution to resolve for 5 Long and 3 Short Blinks on your HP Laptop Click here to view the instructions!
Common problems for Battery
We would like to share some of the most frequently asked questions about: Battery Reports, Hold a charge, Test and Calibrating Battery . Check out this link: Is your notebook plugged in and not charging?
HP Recommended
Example: Pavilion
Microsoft Windows 10 (64-bit)

I have a Pavilion  15-ab157nr.  I got an error message indicating battery replacement necessary.  I replaced the battery with the exact genuine HP replacement battery.  The HP Assistant now indicates Battery Unknown.  The battery charges normally and the battery indicator shows the charging and charge amount with the charger connected.  The laptop works well.  How can I correct whatever the problem is and eliminate the Battery Unknown message?  Thank you.

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