I have purchased luminous ups 850watts. I had purchased in the month of dec 2018. And ups was problematic in the month of jan 2019 itself. I am still calling the customer care executives and the service centre numbers. I have spoken to 30 to 40 people regarding my ups is not working. But they will just pass the call. I have not got any solution till date. Very very worst service they provide. Please dont ever go for lumions brand. Worst service provider from dealer to manager. They just give irresponsible answer. I am not concern person and gve the other person number. This is going on since 3 months.