The V-Guard VT 155D batteries fit perfectly in V-Guard Digital UPS to gift you an uninterrupted and continuous supply of power to your home. Moreover, the VT 155D batteries work well with other UPS systems also. The backup offered by these batteries @400 W load is Two hour forty minutes. The length of these batteries is 505 mm, the width is 190 mm and the height is 415 mm. The filled weight is 51.5 kg and the gross weight is 53 kg. These batteries require 21 L of acid give or take two litre. After full charge, the specific gravity of electrolyte in these batteries becomes 1.245± 0.005 g/cc. These batteries are covered by V-Guard under the standard warranty of 24 months, while there is the option of prorated warranty of 12 months. The technology used enables these batteries to deliver a larger amount of consistent, reliable power. They are engineered to deliver increased power and efficiency while maximizing their life span. In fact the maintenance required with these batteries is quite less and the efficiency they offer is maximum.