Zener sealed lead acid batteries made in Iran with the most advanced technology and high density of lead alloy, calcium and cut for use in UPS, renewable energy systems, telecommunication equipment, etc. Design and production. Use of quality plates, automatic production line machines, no need for service and maintenance (maintenance-free), suitable for sale in the market and good performance to increase performance and excellent performance in a wide temperature range (from -20 to +60 degrees Celsius) is a prominent feature of the battery produced by Zener Engineering Company. The unique construction and use of epoxy sealant completely prevents electrolyte leakage.