OPzS low-maintenance lead-acid batteries with positive tubular plates are designed for backup power systems. Batteries are characterized by long service life, reliability and safety and can be used in cyclic mode. Applications of NovAK OPzS batteries include power supply systems for communication and power engineering, emergency lighting systems, control and signaling systems. Technical Specifications OPzS: Capacity (C10): 100 Ah to 3000 Ah Positive electrode: PbSb alloy (1.7% Sb) Negative electrode: PbSb alloy(5% Sb) Number of charge-discharge cycles: 1200 Features: Transparent SAN casing Water refill every 1 to 3 years The use of modern filter plugs allows the design to be explosion-proof and reduce the number of water refills. Constant charging voltage 2.23±0.01 V/El. The electrolyte is a solution of sulfuric acid. The density of the electrolyte of a fully charged battery is 1.250+0.010 g/cm3 at 20 ° C. Long service life when operated in cyclic charge/discharge mode.