True® Polaris RZR Dual Battery Kit 1000, 900, 800, XP and Ranger

(16 customer reviews)


RZR dual battery kit is an aftermarket accessory designed specifically for Polaris RZR UTVs (Utility Terrain Vehicles). This kit allows RZR owners to install a dual battery setup, providing power management to the vehicle.

Best Polaris RZR dual battery kit fit for these models: RZR 1000, RZR XP 4 Turbo S, RZR Ranger, RZR S4, RZR XP High Lifter, Ranger, RZR 800, RZR 900, General and Sportsman.

  • Polaris RZR dual battery kit has a 1-year warranty
  • Compact size to fit under hood
  • Anti-vibration casing and waterproof cables
  • automatic battery management with VSR


True® Polaris RZR dual battery kit Includes:

  • 1-UTV-SBI-18 complete with insulators and 3M Dual Lock™
  • Number 6 (1-12″) Black cable with lugs
  • Number 6 (1-12″) Red cable with lugs
  • Number 6 (1-18″) support cable (red) with lugs
  • 36mm single meter dual display blue LED dual battery voltmeter (gauge)
  • Automatic on/off voltage-sensitive relay
  • 8 foot duplex wires with noncorrosive connectors
  • Printed Polaris General dual battery kit installation instructions

Benefits from Polaris Ranger dual battery kit

  • Running dual batteries
  • Enjoy adding more accessories as your primary battery is protected with Polaris general dual battery kit
  • Voltage sensor technology automatically separates the two batteries and set to charging mode
  • Polaris general dual battery kit is designed to fit  ATV’s and UTVs’
  • Guaranteed waterproof with engine heat resistance up to 105 degrees
  • Includes  wiring diagram for easy installation
  • Guaranteed not to interfere with your vehicle’s warranty

More advantages

  • (DIY) Do it Yourself technology with the help of the downloadable installation manual and wiring diagram
  • Passed all the QA systems with high-rating
  •  Designed for  small and large  size  vehicle or motor type with 140A
  • Get the Polaris Ranger dual battery kit support anytime and any day by dialing – 509-991-0385
  • Contact us for RZR PRO XP 4 dual battery kit

The first and original rzr pro xp 4 dual battery kit.  Take advantage of having maintenance-free technology from True® Inc. The perfect Polaris Ranger dual battery kit for the following models:  RZR 1000, RZR XP 4 Turbo S, RZR Ranger, RZR S4, RZR XP High Lifter, Ranger, RZR 800, RZR 900, General, and Sportsman.


A True® Polaris dual battery kit is a proven universal technology for any ATV & UTV brands: Polaris, Cam-Am, Honda, Kawasaki,  John Deere, and Yamaha.

RZR RS1, RZR XP1000, RXR XP Turbo and RZR XP Turbo S
RZR RS1, RZR XP1000, RXR XP Turbo and RZR XP Turbo S






Is easy to install and works well. I have it in my 2014 razor 570 and works perfectly
Works great on my rzr. I listened to radio until second battery died then hit the key and the rzr will start right up



(These videos are not endorsed or represented as an “Official Installation video” by True Amalgamated and True Amalgamated accepts no responsibility for its content. It is produced by the end-user as stated. Follow entirely at your own risk.)

Polaris Dual Battery Kit Installation Photos


2016 rzr 900 mod true battery connect – Dave Taylor


Polaris ranger dual battery kit

Sexy RZR Turbo Installed with True® Polaris Ranger dual battery kit

Polaris rzr turbo s dual battery kit

RZR dual battery setup video

Setting an auxiliary battery (odyssey pc925) and True® RZR pro xp 4 dual battery kit in my 2014 RZR 800 XC

Overview How The Battery Isolator Works And What It Does


Polaris ranger dual battery kit installation video

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Additional information



16 reviews for True® Polaris RZR Dual Battery Kit 1000, 900, 800, XP and Ranger

  1. Edmund morgan

    I bought one for my neighbor and installed it on his Polaris ranger the wiring diagram is not correct for installation but I only knew because I am very good with electrical diagrams. Other than that my purchase I have not installed yet but I highly recommend for anyone wanting to use more electronic devices on their ranger utv.

  2. Holly Segerman

    In my side by side, the UTV dual battery isolator configuration works well. I enjoy being able to check the voltage with the gauges included with the box.
    April 15, 2016

  3. Aggie CJ

    I own a 2010 Polaris 800 RZRs and when the time came to set up a dual battery setup…
    Polaris Product Review

  4. justine

    This battery isolator works great with RZR

  5. Ethan Thompson

    Very easy to install. Has everything you need for the right installation. Very impressed with RZR battery kit.

    Comes with everything i need, although the wire to the battery may be a little short, it still worked with some adjustments.

  6. Steve.w

    Great RZR dual battery kit

    This is great. I can now listen to the news via radio and use the lights longer at night without worry that my RZR will not ignite. If the primary battery got into trouble I can jump it to the second battery.

  7. Billy Thomshield

    It works great on my rzr. I listened to the music until auxiliary battery died then hit the key and the rzr will start right up

  8. Scott B

    Installed on a RZR XP 4 1000. Install was pretty straight forward with easy to follow instructions. Only negative is the negative cable (no pun intended). The wiring that is included for connecting the 2 batteries is pretty short. The positive wires were barely long enough and the negative wire was so short that it has tension on it between the 2 batteries. So I will have to end up buying some negative wire and connectors to replace it to make sure the tension doesn’t cause any problems with the battery terminals.

    Other than that situation, the kit had everything needed and works good. The isolator works properly and can be heard clicking when switching between the batteries and also lighting up blue when switching to the secondary battery

    Scott B

  9. Rolio Goliz

    Verified Purchase
    Reviewed in the United States on March 13, 2021

    This is the way to go for charging secondary battery
    This thing works great for charging an auxiliary battery in your vehicle. I also have the one they make for UTV’s and it works great also. Never had a seconds trouble with either of these.

  10. richard.e

    Works perfectly on my POlariz rzr 1000. I listened to radio until second battery died then hit the key and the rzr engine will start right up. I am now more confident than ever.

  11. Brad L

    It Is easy to install and works well. I have it setup with auxiliary battery in my 2014 razor 570 and exceed my expectation.

  12. Suzanne Grant

    Perfect kit and great service from the shipper! I actually order this kit for a 2012 Rzr I purchased, not realizing that I had most of the parts in the kit already. I just needed the relay, the voltage gauges and wiring harnesses. I contacted the retailer and was able to get a refund for the parts I did not used. They even contacted me on the weekend to ensure I was satisfied with my purchase. I cannot say enough with how pleased I was with the kit and the retailer.

    Perfect kit and great service from the shipper

  13. Aggie CJ

    I have a 2010 Polaris 800 RZR, and I was looking for choices for isolators when it came time to put up a twin battery configuration, isolating the backup battery so I could run my radio, lights, and accessories without worrying about damaging the primary.
    Numerous forums had the TrueAm highly recommended, so I conducted some investigation, which included contacting the producer.

    I was impressed that a live person, as well as the business owner, answered my calls.
    He guided me through the steps, clearly described how his device operated, and offered installation advice. I must mention that the process was quite simple, and the directions were very clear. It took me about 30 minutes, largely spent attempting to figure out how to run the wires in a way that would make them seem tidy and be properly tucked away.

    The system has been in place for a while and is excellent. My primary battery is connected to a CTEK battery tender through a quick connect, and when the vehicle is kept in the garage, the main battery is fully charged before switching over to charge the auxiliary battery. I can completely discharge the Aux while in the field, use my radio, lights, and any other accessory, and still have a full, brand-new main battery to start the RZR. I’m quite pleased with the purchase and the TrueAm’s quality.

  14. Cris Harmia

    I’ve had this for approximately 8 months in my 2016 Polaris Ranger 900-5 crew. I installed two 1200 Odyssey batteries. This device performs admirably. The battery that requires the charge the most receives it. I put more strain on my system than the majority of people ever would, and this Real twin battery isolator performs beyond my requirements. You must comprehend your setup and how everything charges if you want to comprehend how this thing operates.

    I have two 54-inch curved 4D light bars, two 50-inch curved 4D light bars, two 7-inch light bars, and multicolored lights in the cab. With my set-up, I can operate all night.

    I can see my voltage fluctuate and hear the Polaris battery isolator clicking back and forth. Even after a long night of hunting, I never drop below 10 volts under a full load. Longer and better negative and positive sentences would have been excellent. Others won’t be as fortunate. Therefore give the vendor a tip. Simply hand out the superior, longer cords. You won’t pay that much more, and to be really honest, even then, I would have spent extra for nicer cables. I didn’t purchase this item for the cables’ faultless performance, however.

  15. Outdoor2

    Excellent item to have placed on my 2016 RZR 1000 XP, had to replace wiring from prior owner who used generic cabling that wasn’t trimmed to length, with the voltage gauge, I can now check both batteries from one convenient area with a quick glance. A dual battery system kit is strongly recommended.

    Thank you for a fantastic product; only time will tell how long it will endure.

  16. Miguel Velazquez

    5.0 out of 5 stars Follow directions. Purchase longer cables
    Reviewed in the United States 🇺🇸 on November 23, 2021
    Verified Purchase
    Install on a Polaris Ranger.
    Easy to install.

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