[Karl Spooner]

..3300 amps of battery storage for 20 hours which means I can use the battery for a week and a half before I worry about it.

39KW?

[JAKraig]

..3300 amps of battery storage for 20 hours which means I can use the battery for a week and a half before I worry about it.
39KW?
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No, actually it is 3300Amps rated at 20 hours.

It is a 48Volt Battery so that works out to a little over one megawatt total in 20 hours. I will not likely use more than 25killowatt a day except in very hot weather, if the weather is hot there will be sunshine to charge my batteries at the rate of nearly 12KW per hour for over 6 hours in the summer.

I realize that I have more storage than I am ever likely to use but the life of a battery is in the number of deep discharges. Taking 15 or 20% out of a battery is nothing, it will last many more years than the rated life of 7-10 years at 2000 to 3000 full discharges.