Hello, I have a bit of an issue and can't figure out how to find out the answer. I want to understand how to find out what battery I would need if I want to scrap the diesel generator I have and go for a battery bank. I have a 1250 kVA rated generator. PF is 0.85, Rated voltage is 400V, rated current 1804 A and rated freq is 50Hz. If I want to replace this generator with a battery bank, how do I go about trying to size the battery bank needed? It is assumed that the battery bank would have to provide power for 4 days, discharge to 85% max and only be used tops once a year. Thank you! Looking forward to hearing from you! Kind regards, mk.