My laptop starts lag after 40% charge left?

[MuneerMono]

Hi Team,

I am facing this issue for such a long time. My laptop whenever the battery percentage reduces from 40% it starts to get lag a lot. I won't be able to play any video. I get some cracking noise from the speakers. I won't be able to work on anything. Then if I connect it to my charger then it works smoothly. 

I followed this link and updated the NVidia Drivers 

https://h30434.www3.hp.com/t5/Gaming-Notebooks/My-Games-Lag-When-Not-Plugged-In/td-p/5973626#:~:text....

But still, I am facing the same problem.  It's like after 40% of battery life I won't be able to use my PC at all.

Please guide me on how to fix this issue.

[WAWood]

@MuneerMono 

Most likely, there is no actual "fix" for this issue. 

Batteries lose the ability to retain charges over time, so most likely, when yours hits 40%, it's not able to hold enough charge anymore to properly power the laptop.

You could look into replacing the battery, but there is no guarantee that will fix this.