Yeah, you would think that they will test the replacement thoroughly before sending out. The first battery i had was bought from a supplier, not Sterling directly, was actually better than the second one which was swapped directly by Sterling.
Two batteries with one cell off - makes you think , either the don't top balance when they assemble the battery or they mix and match cells they know are different.
I'm kind of leaning towards a QC here since the second battery which came from Sterling directly had an incorrect BMS settings as well. Some of which I can change through the Bluetooth app, like max discharge and charge rates, some of them i can't, for instance the BMS is not reporting any load in or out if it's less than 5A. For this as far as I know you need to connect the PC which i can't because it's a sealed unit.