Leisure Battery Box Standard with Straps Caravan/Camper/Motorhome 44*24.5*27cm Features: *Dual USB Ports, Independent Switch Design, Power-taking Design, Real-time Voltage Monitoring *Battery Box/Case Only. Battery Is Not Included. *Suitable for Small-boat Transom Applications. *It Can Be Carried with You and Charged When You Go out. It Is More Convenient to Get Electricity, and Real-time Monitoring of Voltage Makes Going out and Camping More Enjoyable. *Pressure-resistant, Double-fixed Base with Fixed Belt: the Pressure-resistant Material Is Used to Make the Product Have a Good Pressure-resistant Effect and Will Not Be Damaged. *Easy-access Battery Georgias for Connecting Leads. * Built-in Battery Meter Displays Current State of Charge. Specifications: Product Name.