Aluminum battery tray design that fits multiple battery types for versatile use - Compatibility: fits 12V batteries (6Ah or 15Ah) and 6V batteries (7Ah or 12Ah). Its compact size with adjustable straps provides a secure fit for different battery sizes. - Durable construction: made from aluminum with a protective surface treatment to resist harsh conditions and deliver lasting durability. - Easy installation: predrilled mounting holes allow straightforward screwing to various surfaces such as boats or ATVs. Screws are not included. - Reliable retention: adjustable straps hold the battery securely in place to prevent rolling or shifting during transport. Battery not included. Practical use scenarios - On a boat, securing a marine battery in a compact tray to prevent movement while underway. - On an ATV or other off-road vehicle, mounting a spare or primary battery for quick access and stable transport. - In a workshop or trailer, organizing and securing spare batteries for safe storage and ready use.