Luminous inverter and ups the inverter power backup so huge and can give you long time light . I was using this one for the 10 months I never get any kind of problem on this time . Its take less electricity to charge and make your electricity bill low . Its really great inverter. This is a great product that provide me value for my money. I got 3 year warranty of this set . Good and if you want to purchase a inverter advice to purchase this