supply, commissioning & installation of battery operated motor trolley for broad gauge track inspection with following technical specifications 1. pay load capacity: 1 ton ( 2 ) wheels: mild steel wheels with 320 mm dia ( 3 ) transmission: through automatic gear box ( 4 ) battery : 48 volt lithium battery, minimum 80 ah ( indigenous ) . ( 5 ) drive : bldc electric motor minimum 1800 watt with controller and converter. ( 6 ) charger : 25 amperes ( indigenous ) ( 7 ) brakes: drum brake system ( 8 ) base frame: stainless steel tubes ( 9 ) axle: 38 mm diameter, ms & ss made ( 10 ) bearings : bearings made from reputed isi manufacturers like skf & nrb ( 11 ) seating arrangement: comfortable 3 chairs made with stainless steel shall be arranged in front row & 3 seater sofa in second row additional seating for 3 persons shall be arranged at the back. ( 12 ) canopy: ss pipe 25 x25mm & canvas roof cover ( 13 ) running range with fully charged batteries- 80km to 100 km ( 14 ) speed: maximum speed-30 kmph. [ warranty period: 30 months after the date of delivery ]