OPzS batteries are open-type batteries, suitable for telecom systems, monitoring and control systems, signaling systems (for railway stations, airports, and seaports), UPS, renewable energy systems. OPzS batteries are robust energy storage solutions, with a proven technology that has been used for decades in applications that require a safe and reliable battery with long service life. SUNLIGHT OPzS batteries are distinguished by their high tolerance to cycling and long life in standby parallel mode.