SBS "STZ" series batteries are 25-year stationary batteries which are characterized by their high tolerance to cycling, low maintenance, and long life. They are used as back-up power supplies in power stations, nuclear power stations, substations, and telecommunication equipment.
The STZs lead selenium cell structure represents the best possible compromise in lead acid plate technology. By utilizing a proportion of selenium in the grid alloy, a dense fine grain structure is produced. This alloy is extremely corrosion-resistant and virtually eliminates inter-granular corrosion one of the most common causes of cell failure. A lead selenium cell, therefore, combines the advantages of both lead calcium and lead antimony cells while exhibiting none of the disadvantages.
Long life with maximum reliability
Watering intervals 3 years
Improved charging efficiency
High cycle life: over 1,000 cycles at 80% depth of discharge
No positive plate growth
Better able to withstand high temperatures than lead calcium batteries
Eliminates premature failures due to antimonial poisoning