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  1. Home
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  3. Current Deals and Promotions

Current Deals and Promotions

Browse all the promotions and sales currently going on at Sonic Electronix! Save big on car audio products as well as marine audio, headphones, portable electronics and home audio!

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    Battery isolators and relays ✕
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    NVX (7)

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    Battery isolators and relays,
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    Price Range
    Compatible Amperage
    This is the total number of amps that the battery isolator is designed to continually receive.
    Deals
    Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
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    NVX BIR200 (Open Box, Good)

    200 Amp Relay Isolator (BIR200)

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

    NVX BIR200 (Open Box, Good)

    200 Amp Relay Isolator (BIR200)

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    List price $59.99
    -50% $29.99

    In stock

    Add to Cart

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX BIR500 (Open Box, Great)

    500 Amp Relay Isolator (BIR500)

    BIR500 big
    Go to item page Right Arrow Icon of Right Arrow

    NVX BIR500 (Open Box, Great)

    500 Amp Relay Isolator (BIR500)

    • 500 Amp Battery Isolator
    • 500 Amps at 12V Continuous
    • 700 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    List price $89.99
    $85.99

    In stock

    Only 1 Left!

    Add to Cart

    • 500 Amp Battery Isolator
    • 500 Amps at 12V Continuous
    • 700 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX XSBI200 (Open Box, Great)

    Microprocessor-Controlled 200 Amp, Dual Sensing Smart Relay Battery Isolator

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

    NVX XSBI200 (Open Box, Great)

    Microprocessor-Controlled 200 Amp, Dual Sensing Smart Relay Battery Isolator

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

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

    In stock

    Add to Cart

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX XSBI200 (Open Box, Good)

    Microprocessor-Controlled 200 Amp, Dual Sensing Smart Relay Battery Isolator

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

    NVX XSBI200 (Open Box, Good)

    Microprocessor-Controlled 200 Amp, Dual Sensing Smart Relay Battery Isolator

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    List price $79.99
    -43% $45.99

    In stock

    Add to Cart

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX BIR500 - Open Box, Very Good Condition Used

    500 Amp Relay Isolator (BIR500)

    BIR500 big
    Go to item page Right Arrow Icon of Right Arrow

    NVX BIR500 - Open Box, Very Good Condition Used

    500 Amp Relay Isolator (BIR500)

    • 500 Amp Battery Isolator
    • 500 Amps at 12V Continuous
    • 700 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    1
    $499.99

    In stock

    Add to Cart

    • 500 Amp Battery Isolator
    • 500 Amps at 12V Continuous
    • 700 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX XSBI80 (Open Box, Great)

    Microprocessor-Controlled 80 Amp, Dual Sensing Smart Relay Battery Isolator

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

    NVX XSBI80 (Open Box, Great)

    Microprocessor-Controlled 80 Amp, Dual Sensing Smart Relay Battery Isolator

    • 80 Amp Battery Isolator
    • 80 Amps at 12V Continuous
    • 150 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    List price $49.99
    -65% $17.49

    In stock

    Only 2 Left!

    Add to Cart

    • 80 Amp Battery Isolator
    • 80 Amps at 12V Continuous
    • 150 Amps Surge
    • Switching Power: 10 - 16 VDC

    NVX BIR200 (Like New (Open Box))

    200 Amp Relay Isolator (BIR200)

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

    NVX BIR200 (Like New (Open Box))

    200 Amp Relay Isolator (BIR200)

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

    shipping truck icon Free shipping in USA. Provide zip for delivery date.
    List price $59.99
    -29% $42.49

    In stock

    Only 3 Left!

    Add to Cart

    • 200 Amp Battery Isolator
    • 200 Amps at 12V Continuous
    • 300 Amps Surge
    • Switching Power: 10 - 16 VDC

     
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      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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      Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

      • You see only parts engineered for your exact vehicle
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