supply, erection, testing and commissioning of 50v,25 cells set of 300ah battery bank supply, erection, testing and commissioning of 50v,25 cells set of 300ah battery bank for carrier chargers , 50v, 25 cells, lead acid stationary battery set of 300 ah, opzs tubular type cell (2.1 volt each) with transparent san container, confirming to is: din 40736 (with latest amendment thereof). complete with tubular positive plate, pasted negative plates, lids vent plugs, level indicating float, inter row/ inter tier cell connectors. (1set=25 cells.). make exide/celtek/hbl , electrolyte (sulphuric acid) of specific gravity 1.20 at 27°c, sufficient foe first charging of above batteries (with approx. 10% extra quantity) purified and suitably packed in returnable container (is:266 or latest amended). , battery accessories (maintenance tools) as list mentioned as per nit , wooden teak /dry shakhu/ suitable battery stands for above battery sets , erection testing and commissioning of above buttery set after shifting in proper place battery room , buyback of 50v, 25 cells, lead acid stationary battery set of 300 ah, opzs tubular type cell (2.1 volt each) with transparent san container, confirming to is: din 40736 (with latest amendment thereof).