The Dry Battery PTZ7L - 12V - 7Ah is a Valve Regulated Lead Acid sealed lead acid battery (referred to as VRLA) designed by AGM technology. AGM technology uses an Absorbed Glass Mat as a barrier; the electrolyte solution is absorbed at the plate, and the diaphragm is faster. Lead alloy composition and special additives suitable for starting purposes Advanced technology with an acid-free regulator valve, safe for users and vehicles. Outstanding advantages of the Dong Nai Maintenance-Free Dry Battery (VRLA) PTZ7A (12Vâ??7Ah) Specially designed for motorcycles. The most advanced technology for high performance, increased battery start-up, and service life Completely free of maintenance during use. Anti-shake design, suitable for all different terrain conditions.