Galaxy S6 drain battery so fast when under 30%

[AC Question]

My Galaxy S6 drain battery so fast when it is under 30%. It is about 1% per minute.
But if it is above 30%, its battery use normally.
Anyone has encounter that problem?

 

[matoind]

Even I am facing the same problem. But in my case the trouble starts at 15%.

I wonder if I should contact the service center.

 

[cohoman]

It sounds like your battery needs to be recalibrate to give more accurate level readings. Try Googling "S6 battery recalibrate".