Using your Attwood Group 27 Battery Tray with Straps is easy. First, find a suitable location with enough space for the tray's dimensions (12 - 3/8' L x 7 - 1/8' W). Mount the molded base using the four #10 Panhead fasteners. Place your battery, which should be up to 10 - 1/2 inches in height, into the tray. Secure it with the polypropylene hold - down strap using the positive - locking, quick - disconnect buckle. When it's time to change the battery, just release the buckle. For maintenance, keep the tray clean and dry. Check the fasteners regularly to make sure they're tight. Avoid exposing the tray to extreme temperatures or harsh chemicals to extend its lifespan.