I have a set of 4 grp 27 from Sams that I use in series in a 48 volt boat. The oldest one is 2008 along with a 2009, 2012 and 2016. And the work just fine with 8 years difference in age. Pretty poor quality for old sams club to only get 9 to 10 years out of grp 27's along with the fact that they get regular charges at 61 volts from a Lester industrial charger. A lot of batteries die from under charging.
I also ran a set of four sams gc 2 for 3 years and hammered the snot out of them with fast short charges because I didn't want to listen to a generator. No, not even my Honda. I only replaced them because I went with a resi frig and six Sams gc2 and just wanted to start out fresh. They are an excellent value.