Yes. Each pair of 6 volts (wired in series to produce 12 v) provides 220 a/h.
Since we can only use half the power, that = reality = 110 a/h.
Each series pair we add to that will increase the power 110 a/h...
4 batteries = 220 a/h useable.
6 = 330
8 = 440
More batteries = more time or more current draw (Ampere / Hours) before you use all the power.
We have 4 T105's. We can charge while cooking the evening meal, run on battery during the evening, and have enough power left to run the coffee machine and microwave and hair dryer in the morning (on the inverter)
Depending on how long or often they run, the furnace blowers, on a cold night, can put a serious hurt on the batteries.