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1200 watt-hour

This is a basic 1200-watt system with a 100ah (1200watt hour) lithium iron phosphate battery, a 1500-watt inverter, a 20-watt solar charge controller and two 100-watt, 12-volt solar panels. There are other configurations for this size system. You can have the solar panels in series or a combination of series and parallel. You can have multiple 100ah batteries in series or parallel. You can also use lead acid or AGM batteries instead of lifepo4, but you will need twice the number of batteries. However, this is the configuration I would use to build this system.