Off grid solar power – How many batteries do you really need?
Even though my main battery banks are 24V 630Ah and 24V 375Ah, I’ve just been running my house on these batteries for the last few weeks as a test.
With 1.5kW of solar panels hooked up, the batteries are at float by about 11am and get down to about 75-70% state of charge overnight.
During the evening I have an electric fan running, a 5W LED lamp, my chest fridge and the laptop and satellite modem going. Once I go to bed, the fan stays on, I have a phone charger for the tunes and my chest fridge runs all night.