Laptop battery drop suddenly [duplicate]

I am facing a problem with the battery status of my laptop. When I charge my laptop completely and remove from power, the battery remains full for some time and then it suddenly goes to around 13%. The time gap between this is also not constant, sometimes it will remain normal for 30 Minutes, sometimes it does that in 2-3 Minutes.

I have been facing this problem for a few months. Earlier it used to happen less often, now that happens every time. Because of it, I am not able to use my laptop without putting on charge. Also, I think this must be a software problem as battery power is not likely to change from 100 to 20% suddenly.

I searched the INTERNET for a solution but none of the suggested worked. I have tried upgrading battery driver, updated BIOS, nothing worked.

Can someone suggest solution?

Solution 1:

This behaviour is consistant with a bad battery. Some of the cells are damaged, it is dying. You should replace it.