Unbound Solar carries durable solar battery boxes and enclosures that are perfect for your off-grid or grid-tie with battery backup system. . Most industrial off-grid solar power sytems, such as those used in the oil & gas patch and in traffic control systems, use a battery or multiple batteries that need a place to live, sheltered from the elements and kept dry and secure. This place is called a "battery enclosure", or what is. . Sunwize Power & Battery Battery Enclosures are available in various sizes and configurations for housing batteries and support equipment, engineered specifically for the PV industry but suitable in a wide variety of applications. Most of our enclosures are designed to NEMA3R and rated for outdoor. . Part Number: BBA-1M Manufacturer: OEM Material: Aluminum (Standard), Stainless Steel Available Finish: Mill (Standard), Powder Coat UL Approved: Yes NEMA Rating: 3R, 4, 4X Overall Dims (HxWxD – IN): 20. A poorly designed system can ruin your batteries.