Showing unknown battery

[Riya98]

 

I am using my HP laptop for the last two years. I bought it new. But today after turing on the laptop, it's shows some writings which I couldn’t fully read as the screen was flusing but I read one line ENTER to restart (in the upper line it's written something about Boot). (FYI, i pressed the on button two times before turning it on.) After that, the laptop started but it's not charging anymore and when I am turning it on, each time it's showing that the battery is not official. I am attaching that image here. I am wondering why it's showing this today after two years as I can remember I didn’t change any batteries till I bought it. Although the laptop is operating as usual, the image is popping up only while I am turning it on.. The warranty is not valid anymore, so I can't contact the customer care. So I need help fron you how should I fix the problem. It will be great if you can assist me. I will be eagerly waiting. 🙏

(My laptop's model is HP 15s)

[TheOldMan]

While might not have been changed, it would seem the battery is failing.  The software must not be able to determine what has happened, so it suggests the battery is non-HP.  

Please post the complete model number of the laptop.  There are many different models in the  HP 15s line., to get the correct battery and how to replace it.