VMAX smart box power center marine grade smart battery box (adjustable box fits all group 24, 27 AND group 31 size batteries) USB-C and USB fast charging ports. (Box wil be 3" wider than the group 24 battery. If space is tight, please check our Broup 24 box for a smaller size box) This kit includes: x1 Group 24-31 battery box x1 voltmeter with digital blue screen with USB-C/USB ports x2 ring cables (positive + negative) x2 6ga Vlynx battery cables 100% copper x1 adjustable nylon box strap, mounting brackets and hardware x1 adjustable placement plastic divider to adjust for different size batteries (adjustable from group 24 to group 31) - battery not included - Ideal for: Trolling motors, camping, overlanding, home backup, phone charging, emergency backup and more! Adjustable group 24-31 high quality marine certified battery box. (strap and mounting hardware included) Battery Box Dimensions: Inside Dimensions: Length: 14-1/2" Width: 7-1/4" Height: 10-3/8" Outside Dimensions: Length: 17-3/4" Width: 10-1/4" Height: 10-7/8" New tougher material - Impact resistant to -30°F (-34°C). Heat stable to +200°F (+93°C). Meets U.S. coast guard regulations 183.420 & ABYCE-10.7. impervious to acid, gasoline, oil and solvents. Will not rust, UV protected. made in USA. Battery not included.