Gruber Power 12 Volt - 12 AH Battery - AGM 1 Year Warranty. Using brass coated lead alloy battery terminals minimizes impedance of connecting cells inside. Case made of ABS resin and cells kept under internal pressure protects from outer shock or impact. Micro-porous AGM separator completely absorbs and retains electrolyte under the pressured cell design. Sealed Lead Acid Battery. USA Manufacturer Direct