Whether you are running dual batteries to power your overland accessories or using it as a back up to your main battery, you're going to want to keep that battery safe at all costs. Rago's Group 31 Battery Box is made from strong, rust-proof stainless steel. Our Battery Box offers protection on all sides for your secondary Group 31 battery. This battery box is versatile enough to be placed under the hood or stored anywhere in your vehicle, trailer, or boat for multipurpose use. Rest assured knowing your vehicle will always have the power it needs. This battery box is designed to install with the factory J-style battery bolts. Please Note: Some vehicles may require additional hardware, such as J-style bolts with longer threading. Replacement J hooks might be necessary and can be found at any auto parts store.