supply of sealed maintenance free valve regulated lead acid rechargeable battery of normal voltage 12 v, nominal capacity of 7 ah suitable for use of emergency light unit of lhb type ac coaches (test certificate to be enclosed along with batteries). the battery shall not be more than 2 months old from the date of manufacture, at the time of supply. makes: exide, tafe (amco), amar raja, hbl only.sealed maintenance free valve regulated lead acid rechargeable battery of normal voltage 12 v, nominal capacity of 7 ah suitable for use of emergency light unit of lhb type ac coaches (test certificate to be enclosed along with batteries). the battery shall not be more than 2 months old from the date of manufacture, at the time of supply. makes: exide, tafe (amco), amar raja, hbl only.,sealed maintenance free valve regulated lead acid rechargeable battery of normal voltage 12 v, nominal c apacity of 7 ah suitable for use of emergency light unit of lhb type ac coaches (test certificate to be enclosed along with batteries). the battery shall not be more than 2 months old from the date of manufacture, at the time of supply. makes: e xide, tafe (amco), amar raja, hbl only. [ warranty period: 30 months after the date of delivery ] ]