OP / OPC stationary batteries are assembled from sets of positive and negative pasted plates, divided by microporous separators with a layer of fiber to limit runoff of the active material. The bars are made of an alloy containing 1.5% antimony. Batteries are composed of cells 2V capacity from 146 to 536 Ah. Each cell consists of an appropriate number of cells or multi-cell batteries linked together in series to achieve a desired on-load voltage. The cells are housed in a freestanding, transparent container constructed of a SAN type material. The base of the battery container has two pairs of openings against which sets of positive and negative plates are rested. Positive and negative plates are connected together via welded bridges to comprise sets of plates (+) and (-). Multi-polar plates, connected together and segregated by isolating shields (separators) comprise groups of plates which are then placed in the battery container. Each bridge has at least one terminal extending beyond the surface of the top cover. An individual container is closed with a cover. The cover is attached to the container using a special acid-resistant glue, ensuring the tight sealing of the cell. The holes in the cover through which the terminals extend are sealed using a specially designed rubber ring. Each cell has a pouring opening in its cover (for filling the electrolyte), closed bayonet-style by a ceramic plug which provides ventilation and absorbs the sulfuric acid fumes which are produced during the charging process..
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