Lead Acid Battery For UPS Security Alarm Emergency System Medical Equipment Premium Alloy Construction & Stable Performance Adopting premium Pb-Ca-Sn-Al alloy grid formula, this battery features excellent overcharge and over-discharge resistance. It delivers ultra-low self-discharge rate, long standby storage life and consistent, reliable long-term performance. Sealed Maintenance-Free Design Built with advanced AGM sealed technology and upgraded stable plate materials, the