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  3. NVX Automotive Parts & Accessories
  4. NVX Performance Parts & Accessories
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    NVX BIR500

    500-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 700-Amp Surge)

    BIR500 big
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    NVX BIR500

    500-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 700-Amp Surge)

    • 500-Amp continuous / 700-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    VIP Star Icon

    VIP Product Get $8.00 in rewards to spend later

    36
    List price $95.99
    -17% $79.99

    In stock

    Add to Cart
    Used from: $85.99

    • 500-Amp continuous / 700-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16V DC operating range

    NVX XSBI500

    500-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 700-Amp Surge)

    XSBI500 big
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    NVX XSBI500

    500-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 700-Amp Surge)

    • 500-Amp continuous / 700-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    VIP Star Icon

    VIP Product Get $9.00 in rewards to spend later

    8
    List price $109.99
    -18% $89.99

    In stock

    Add to Cart
    Used from: $76.88

    • 500-Amp continuous / 700-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    NVX XSBI200

    200-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 300-Amp Surge)

    XSBI200 big
    Go to item page Right Arrow Icon of Right Arrow

    NVX XSBI200

    200-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 300-Amp Surge)

    • 200-Amp continuous / 300-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    6
    List price $79.99
    -38% $49.99

    In stock

    Add to Cart
    Used from: $45.99 Like New from: $42.49

    • 200-Amp continuous / 300-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    NVX BIR200

    200-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 300-Amp Surge)

    BIR200 big
    Go to item page Right Arrow Icon of Right Arrow

    NVX BIR200

    200-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 300-Amp Surge)

    • 200-Amp continuous / 300-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    17
    List price $59.99
    -17% $49.99

    In stock

    Add to Cart
    Used from: $29.99 Like New from: $42.49

    • 200-Amp continuous / 300-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16V DC operating range

    NVX BIR80

    80-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 150-Amp Surge)

    BIR80 big
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    NVX BIR80

    80-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 150-Amp Surge)

    • 80-Amp continuous / 150-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    10
    List price $19.99
    -20% $15.99

    In stock

    Add to Cart
    Like New from: $13.59

    • 80-Amp continuous / 150-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    NVX XSBI80

    80-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 150-Amp Surge)

    XSBI80 big
    Go to item page Right Arrow Icon of Right Arrow

    NVX XSBI80

    80-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 150-Amp Surge)

    • 80-Amp continuous / 150-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    2
    List price $49.99
    -50% $24.99

    In stock

    Add to Cart
    Used from: $17.49

    • 80-Amp continuous / 150-Amp surge
    • Ideal for car stereo systems and mobile electronics
    • Prevents the main starter battery from draining
    • 10V to 16.5V DC operating range

     
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      Related Categories in NVX Performance Parts & Accessories

      NVX Interior Auto Accessories
      NVX Car Batteries, Power & Battery Accessories
      why-shoping-with-sonic

      We love people and we're ready to help you! See what separates us from our competition.

      Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
      Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
      We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
      Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
      We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
      Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
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      Shop your 2019 A5 Sportback
      Why Use a Vehicle Fit Guide?
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      Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

      • You see only parts engineered for your exact vehicle
      • You avoid incompatible radios, speakers, or wiring
      • Installation is smoother, faster, and frustration-free
      • You get the correct accessories the first time

      Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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