How much does a 1kWh battery cost for outdoor power supply
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
You can do this by checking the power ratings of the appliances you wish to power with your battery. If you consider the average daily consumption of an American home, which is 30 kWh per day, and consider that you only really use energy about 16h a day (except the fridge, which runs 24h a day), then a 3 kWh would last about 1,6 hours.