OPzS flooded tubular 2V cells is vented type a traditional design complies with International standards. These are manufactured with die cast tubular grids and optimised pasted negative plates. These batteries requires low maintenance, long life service and excellent capacity performance for operating high temperature and can provide a premium efficient and cost effective energy solution. This battery is tubular type in which the active material is packed into parallel microporous tubes containing a central lead-antimony alloy spine. This construction gives high active material efficiency and long cycle life.