3.5kVA inverter with 4 pieces of 200 Ah battery is most inverter combo set which is designed for home where power cuts are frequent and for long hours, 10- 15 hours. 3.5 kVA inverter is good enough for 7- 9 bhk home for running 15-12 led bulbs, 2-4 fans, 1 television, 1 mixer, and small 160-liter refrigerator during power cuts. It is a solar-ready inverter on which solar panels up to 2900 watts can be connected in the future to run all home appliances from solar during the day.