16/box. Sold individually. 3 cylinder. This battery has a 1-year Manufacturer's warranty and is maintenance free. With an immobilized electrolyte system and a well-proven leak-proof safety design, it can be operated in virtually any position. Designed for consistency, reliability, compactness and extended use. Recognized and approved by IATA/ICAO and DOT for surface and air transport, and IMDG Amendment 27 for water transport. Battery Dimensions: 5.375"L x 2"W x 3"H