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.
The UPS has button for ON and OFF. Also it has many indicator such as mains on, charging, overload, no load etc.
The battery takes very less space because it is slim but it lighten your home. Yes you have to apply distilled water whenever it is needed.
I have purchased it and it made me happy. You must buy this if you have to buy inverter or UPS.