I have hp pavilion laptop, its battery is now not charging beyond 70%.

[Dinesh_Kumaar]

I have laptop approx 2.5 years old, but battery is just around 1.5 years old as it was changed once when my laptop was under 1 year purchase warranty, its battery is now not charging beyond 70%. Battery check is showing status OK. one month ago it was not charging beyond 80% and now after one month its stuck at 70%. already updated BIOS. what to do now?

Already Tried :

Calibration

BIOS update
HP battery diagnostics

[WAWood]

@Dinesh_Kumaar 

You can check the battery to some extent using Powershell built into Windows 10. as follows:
1) Press Windows key + X
2) Click Powershell in the menu
3) Type powercfg /batteryreport

This will generate a report and if you scroll down, you will see Design Capacity and Full Charge Capacity ratings. If the Full Charge Capacity is much less than 100% of the Design Capacity, it is faulty and needs to be replaced.