Thanks for replying. I will be sure to check your company's website. Actually I am facing another problem too. In my present house I have a setup of a local ups (inverx but transformer wala) and an imported battery (TPS spark 150 ah). The problem is that when power comes back, ups charges the battery for 3-4 mins and then stops charging (green light pops up showing charged full). But when the power goes down, it only gives a backup of 50 mins on 4 energy savers. Took my ups to a local electrician. He said that "ups mai koi fault nai, battery check karwao" kindly help me on this one too. Thankyou