THEPRO Upgraded 12V 140 Amp Dual Battery Isolator Kit with 20ft Real 6 AWG Pure Copper Cable - VSR 2.0 Smart Voltage Sensitive Relay AUTO Charger for RV, Marine, Car, Camper & UTV, Dual Battery Setup

Upgrade your vehicle's power management with our Gen 2 Dual Battery Isolator Kit. Featuring an advanced 140A Smart VSR, this system automatically protects your primary battery from draining, ensuring you never get stranded. While most competitors use inferior 7AWG or CCA wires, our kit provides 20ft of Real 6 AWG 100% Pure Copper Cable (rated to 105°C), delivering maximum conductivity and heat resistance for heavy-duty RV, marine, and off-road use. The industry-leading 20ft cable length offers ultimate installation freedom; you can cut and customize the wire to your exact layout, ensuring a professional, clutter-free setup regardless of your vehicle's size. Built with IP65 weatherproof housing and high-quality marine-grade terminals, this all-in-one solution is designed to survive harsh environments while providing reliable split-charging for your secondary battery. It is the perfect "set it and forget it" upgrade for any professional DIY electrical project.

• [VSR 2.0, Dual Battery Isolator] Equipped with the 2nd Generation 140A Voltage Sensitive Relay (VSR). Unlike outdated 1st Gen isolators, our upgraded chip features precise cut-in (13.3V) and cut-out (12.8V) thresholds. It ensures your primary battery is always charged and ready to start, automatically isolating the secondary battery to prevent total power drain while the engine is off.
• [100% PURE COPPER & REAL 6 AWG CABLE] Don't be fooled by cheap and thin 7AWG or CCA (Copper Clad Aluminum) wires that cause voltage drops and overheating. Our kit features premium 100% pure copper 6 AWG power cables (20ft Red / 3ft Black). Rated for up to 105°C (221°F), these thick, high-conductivity cables ensure maximum current flow and zero compromises on safety for your dual battery system.
• [EXTRA-LONG 20FT CABLE FOR VERSATILITY] Stop struggling with short cables that don't reach. Our industry-leading 20ft (6m) red cable provides the necessary length for large RVs, long-wheelbase trucks, boats, and campers. Enjoy the freedom to cut and customize the cable to your exact layout, ensuring a clean, professional installation without messy excess. Whether you're mounting the second battery in the trunk or under the chassis, it delivers the ultimate flexibility other standard kits lack.
• [MARINE-GRADE DURABILITY & SAFE PROTECTION] Built to survive harsh environments. The isolator is IP65 weatherproof and vibration-resistant. Combined with high-quality marine battery terminals, heat shrink tubing, and insulated ring terminals, this kit prevents corrosion and short circuits. It’s the ultimate "set it and forget it" solution for off-road and marine adventures.
• Everything needed for a standard professional setup is in the box: 1x 140A Smart Isolator, 20ft Red & 3ft Black 6AWG Cables, 3x Marine Terminals (Pos/Neg), 3x Battery Clamps, 2x Insulated Ring Terminals, plus a full hardware pack (Screws, Nuts, Washers, Heat Shrink).We stand behind our quality with a 12-month warranty and lifetime technical support to ensure your DIY installation is a success.We stand behind our quality with a 12-month warranty and lifetime technical support to ensure your DIY installation is a success.