Hi friends I wanna share my review about iball ups it is not so good. But iy is average I bought this ups 6 months before at Rs 1800 The | BALL is made best product in world the use best qualities product and the best example is | BALL ups-621 volt this ups is average and has less battery backup.Iball has finally launched very bad and most useless UPS. It is fully electrifying inverter with 600 volt a and 300 watt. We use it for one purpose for my pc but it is not soo good but it is a average product. I suggest not take this UPS but there are others brands too which has more battery life buying this product is not worth . thanks