supply of 12v, 7ah capacity sealed maintenance free battery suitable for emergency light unit , 12v, 7ah capacity sealed maintenance free battery suitable for emergency light unit of sg & lhb ac and non ac coaches (type ii) confirming to rdso specification no. rdso/pe/spec/ac/0180-2016 (r ev-0). accepted make as per annexure a of rdso/pe/spec/ac/0180-2016 (rev-0)- m/s. exide, m/s. tafe (a mco), m/s. amar raja, m/s. hbl. firm should submit test report & certificate of authorization from oem. [ w arranty period: 30 months after the date of delivery ] ] , emergency light unit with 12 v, 7 ah vrla battery for lhb type coaches confirmi ng to rdso spec. no. rdso/pe/spec/ac/0180-2016 (rev-0), type-ii and rdso drg. no. rdso/pe/sk/tl/ 0181-2016 (rev-0) - sheet no. 1 & 2. [ warranty period: 30 months after the date of delivery ] ] , emergency light unit type i with 12 v, 7 ah capacity sealed maintenance free battery for sg coaches conforming to rdso specification no. rdso / pe / spec / ac / 0180 - 2016 (rev. 0) withrdso draw ing no. rdso / pe / sk / tl / 0180 - 2016 (rev.0) sheet no. 1 & 2. [ warranty period: 30 months after the date of delivery ] ]