NOCO HM426 Dual 6V Battery Box Commercial Grade Battery Protection Dual 6-volt batteries can be difficult to store, but the NOCO HM426 makes it easy! Designed for dual 6-volt batteries intended for marine, RV, and commercial equipment, this box provides storage in any application you could possibly need. Its specialized four-corner fastening system with a captive lid creates a secure enclosure for intuitive storage that holds the battery firmly in place. The rotationally-molded construction also protects the box and its battery from cold temperatures, UV rays, oils, gases, and other harmful materials. Features for Health and Safety The HM426's design includes cable entry holes so that you don't need to remove the battery from the box when you need to use it. With full-flow ventilation and a large battery acid-reservoir, the box protects against gas expulsion and acid build-up. It's also perfect for recreational and commercial settings. This makes it an incredibly safe option for installations in boats, campers, motorhomes, trailers, caravans and more.