Tenders for Supply of 12V, 7Ah Sealed Maintenance Free Smf Lead Acid Rechargeable Battery For Emergency Light Of Ac & Non-Ac Coaches As Per Rdso Specification No. Rdso/Pe/Spec/Ac/0180-2016 Rev. 0. Accepted Make: M/S Exide / M/S Tafe Amco / M/S Amar Raja / M/S Hbl Only..