Luminius is the most famous brand for batteries, UPS and inverters which has acheived many awards for their hardwork, labour and quality product.
I have experienced Luminous when I bought an inverter which consists of tall tabular battery and UPS about 2 years ago which costs me around 18000 INR.
It has very tough battery which lasts upto 10-15 hours when 6 bulbs and 3 ceiling fans runs in my home. It has instruction manual which explains everything very clearly and helps you establish it more frequently.
I cant belive that in 8 years my luminous ups no have a singal problem and I am not spent any extra money on it after buying this at till date 20/01/2016 but this normaly worked in my house