Completed building a home back up power system bother batteries and gas powered when electricity not available from municipal

use multiple cars marine deep cycle batteries for combined then hook up to ups system to create a very powerful backup power system in this case 1000watts system can sustain couple days of electricity

a gas generator will kick in when power electricity goes out as well along with the back up battery power, will run maybe twice a day for couple hours to charge up the batteries or for other electricity need