I ordered a battery directly from Dell for my PERC P710P controller card.  I ordered this battery on Aug 15, 2019.  The battery has been working fine when I installed it after receiving it.  Recently, my battery is showing a status of being removed in MegaRAID.  Now when I power on my workstation, I am seeing a message about the battery not being connected and press D to disable the battery.

I am a little surprised that the battery is only lasting one year and two months.  How long do these batteries last exactly?  I only paid less than $16 for it, but I thought it would last longer than one year...