Most people here seem to be thinking of small home or office ups batteries
I got over three years of full-time everyday use cycles from my first set of Telco/server AGM batteries
How many years of use will the avg weekender get out of 1200+ cycles ?
50 weekends equal 100 cycles If they charge on Saturday and again when they come home
That's about 12 years of use
Don't confuse the 11# home ups battery
With the 105# 136 amphrs telco batteries
Different quality of mfg, and much denser lead to rated capacity ratio
I don't know what happen to anyone elses batteries
But i don't do 50% > 90%
Because i full time, I attempt to keep my batteries SOC
As high as possible, i charge everyday