Using your Attwood Durable Group 24 Battery Tray is easy. First, make sure you have the #10 fasteners handy for installation. Place the battery in the tray, adjust the height of the crossbar as needed to fit the battery properly, and then use the stainless - steel retaining bolts to secure the battery. When it comes to maintenance, since the tray is made of non - corrosive black plastic, it can withstand normal wear and tear. But it's a good idea to check the retaining bolts regularly to make sure they're tight. Also, keep the tray clean and dry. If you notice any signs of damage, refer to the Quick Guide (pdf) for further instructions. Always ensure the tray meets the ABYC Standard E - 10 and U.S. Coast Guard requirements during use.