Lumi nous inverter. Review on Luminous Inverter and UPS

So rather buying this you should proffer the other company inverter. I think other company products will be efficient and Good. In our area power cut in night time is 3 to 4 hours and we need inverter with battery always. Which I bought Luminous inverter is very low and then we have to sit outside of the office foldings and weather surroundings. Luminous I bought before 2 years 1500 va which I bought for my office. I had installed 20 numbers inverters. This inverters during lot of power cuts, battery long last only 4 hours life at while more power cut times. I was checked all batteries and I was found however the inverter machine is not functioning properly. Could not take the load of 9 lights and 6 fans on each inverter and the battery was drained out fast and continuously a red light blinking and then it is going to OFF mode. Please check before buying this inverter