T-1275's are not the best choice for ease of maintenance, top charging, or equalize recharging. They require quite a bit more voltage, time and work to equalize recharge to a full 16.0V to desulfate.
Ask Mexicowanderer more about the details on these floor sweeper, scrubber, and sometimes golf cart batteries.
Unless you understand the limitations of these batteries, and are willing to go the distance to really get them fully recharged, GC-2's are a much better value, and much easier to top charge, maintenance recharge, and desulfate, due to the physical volume, plates, and electrolyte volume to lead plates dimensions.