Ideal Grid Support Voltage to extend the life of the Flooded Batteries
I have a grid tied system that allows net metering. I have an 8100 W array with 2 Schneider Electric XW6048 inverters, 4 charge controllers,and battery for backup. The battery is flooded 875 Ah and 48V. I want to maximize the life of the battery. I understand that each month I should exercise the battery down to 48V, top off the distilled water and then equalize the batteries. Three questions:
1. How do I exercise the battery down to 48V? Set Grid support to 48V for a day a month?
2. What grid support Voltage should I set the inverter to so that the batteries will have as long a life as possible?
3. Anything else that I need to do to extend the battery life?
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