Is it normal to increase a Current Pending Sector in 9 hours?

I got a new WD15EADS-00S2B0 and encountered a reading error very soon . According to the CrystalDiskInfo,the power on hours are 9 hours only and  the Current Pending Sector Count increased 1 . I have another WD15EADS-00R6B0 which power on hours are 2469 hours ,and there are no Current Pending Sectors or Reallocated sectors.

In fact ,I had encountered successive three WD15EADS-00S2B0 had defects. The first one 's motor failed at the beginning,the second 's motor failed in two days. I do not think it’s my system’s power issue. Because my WD15EADS-00R6B0 is still healthy . And I just connect only one 1.5TB hard drive each time.

I strongly recommend  WD to check the  quality of the WD15EADS-“00S2B0” entirely.

This has been noted and has been passed along.  Thank you.