Polaris Dual Battery Kit for RZR, Ranger and General SeriesBoost your RZR’s electrical capacity with this dual battery kit, designed to support high-demand accessories like winches, lights, and audio systems. Featuring a smart isolator for automatic battery management, it protects your starting battery while extending runtime for auxiliary gear. Built for rugged terrain, the kit includes heavy-duty wiring, mounting hardware, and reverse polarity protection—ideal for off-road enthusiasts who push their machines to the limit. Brand That Trusted Us! Our Amazon Store Reviews Why Choose True® The UTV-POLARIS is backed by field-tested reliability and engineered for seamless integration with aftermarket accessories. Heavy-Duty PerformanceBuilt for Harsh ConditionsBattery Protection FirstLow-Voltage Cut-In/Cut-OutNon-Polarized Design Application Polaris Dual Battery Kit Wiring Diagram Installing the best UTV dual battery kit in your Polaris RZR—such as the Pro XP or Ranger—enhances its power management capabilities, ensuring a reliable and consistent power supply for all your needs, whether for recreational adventures or demanding work environments. DIY-Friendly Installation Comes with detailed instructions and all mounting hardware, making installation straightforward for DIY enthusiasts. Heavy-Duty Wiring & Components Industrial-grade cables, terminals, and connectors handle high current loads and are built for rugged use. Testimonials “Ordered the kit, had a couple of questions about where to mount the isolator and how long the cables are. True’s support answered pretty quickly, and I got a tip that helped hide the wiring from splash damage. After using the UTV dual battery isolator for several months, it’s still solid as day one.” Ron McCaulley Moab ATV/UTV Trails “After installing the True dual battery kit, my UTV power system became rock solid. The utv dual battery isolator from True works seamlessly, accessories run smoothly, and starting power is always protected. This isolator kit is a must-have upgrade for serious off-roaders and work-focused riders.” Logan Parker Colorado Frequently Asked Questions Does it regulate amperage or prevent overcharging? No. The UTV-SBI-18 does not regulate amperage—that’s handled by your voltage regulator and stator/alternator. It simply controls when the second battery is connected to the charging system. Why does the LED stay on after the engine is turned off? This is normal behavior. The LED indicates the isolator is still connected. To test disconnection, briefly turn on the headlights—the LED should turn off, confirming the isolator has opened the circuit. What makes this UTV battery isolator different from standard ones? When we talk about a True® dual battery isolator, what sets it apart from many other isolators on the market comes down to a few key features:Smart Charging Technology – True isolators often have intelligent circuitry that ensures your auxiliary battery charges efficiently without overloading the starter battery. Many standard isolators just split voltage without optimizing charge.High Current Capacity – True isolators are rated for heavy-duty use (often 140A ), which means they can handle multiple accessories like fridges, winches, lights, and inverters simultaneously. Many generic isolators are rated lower, limiting what you can run safely.Durability & Build Quality – True isolators are designed for off-road and harsh conditions. They usually have solid connectors, robust casings, and corrosion-resistant terminals, unlike cheaper models that may fail under vibration or weather.Voltage Sensing & Protection – True units often include voltage-sensitive relays or smart circuitry that prevent your starter battery from being drained, automatically disconnecting loads when necessary. Cheaper isolators may not protect your starting battery as effectively.Compatibility & Easy Installation – True isolators are designed to fit popular vehicles (like Ford, Toyota, Honda, Jeep) with minimal modifications. Other brands might require custom wiring or extra components. How does it work? The kit uses an intelligent battery isolator with PEP® (Power Excursion Protection) technology. This ensures the main battery is prioritized for starting, while the auxiliary battery powers accessories How do I monitor battery status? Optional Single Meter Dual Display (SMDD) shows real-time voltage for both batteries.Saves space and simplifies monitoring Is it compatible with stator-based charging systems? Yes. The UTV-SBI-18 is specifically engineered for stator-based UTV systems, ensuring efficient charging without overloading the system.
