Supply, Installation And Commissioning of 48V, 850AH, VRLA Battery Set At 400kV Khammam Substation., Installation And Commissioning Of 48V, 200AH, VRLA, Battery Set At RTPS, Raichur., 1 set, Installation, And Commissioning Of 220V, VRLA Battery Set At, 400kV Gooty Substation., Installation and, Commissioning of 220V, VRLA Battery set at 400kV, Khammam Substation.