What will happen to my VRLA batteries life by not controlling the charge voltage?

As mentioned before VRLA batteries are voltage sensitive. In fact all batteries are voltage sensitive. If you continually charge your VRLA battery over the recommended levels you will shorten the life of your battery. Our tests have shown that you will reduce the life of your battery by between 5% and 7% for every 1/10th volt above the voltage recommended. For example if you continually charge your battery at (depending upon the temperature) a temperature compensated value of 14.50 volts when it should be at 14.10 volts (4 tenths over), you can expect to reduce the life expectancy of your battery by 20% to 30%.