Heavy Gauge, Extra Flexible Battery Cables for interconnecting batteries and for connecting inverters. These solar battery cables are also used inside systems to connect to inverter and other high amperage equipment. Flex Wire rated and UL listed for use as building wire. We mechanically crimp copper lugs with a UL listed crimping system and finish with heavy-duty color-coded heat shrink. The wire casing on these heavy-duty battery cables is black. For “wet” locations such as marine we also can crimp these cables with tinned lugs for anti corrosion.