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NVX XSBI500 (Open Box, Great)

Microprocessor-Controlled 500 Amp, Dual Sensing Smart Relay Battery Isolator

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

Learn more about the ls-xsbi500-u8
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Universal – fits most vehicles.

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2026-06-08 09:46:00
List price $99.99
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Product Highlights


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

Description


NVX brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.


Eliminate Voltage Drop

These Smart Battery Isolators are designed specifically for use in multi-battery applications. The XSBi series of isolators primarily monitors the main starter battery voltage. Once the starter battery voltage reaches 13.2 volts, the solenoid automatically connects the auxiliary battery to the charging system. When the whole system drops below 12.7 volts, the solenoid opens and isolates the starter battery from the auxiliary battery. This ensures you should never have a drained starter battery again.

Lengthen the Life of Your Batteries

These smart battery Isolators also help lengthen the life of your starter battery. When two-vehicle batteries are wired in parallel they have a tendency to charge and drain one another. All relays disconnect the batteries when the engine is turned off. This prevents excessive wear and lengthens the life of the batteries. When you turn your engine back on, the batteries will be connected without any voltage drop to the second battery.

Upgrade Nearly Any Ride

This smart isolator is a must when adding a second battery to your vehicle. In your car, you might be looking to add a second battery when installing a competition-grade amplifier. High power output amplifiers require a lot of power from your charging system. Upgrading it with a second battery will be a necessary addition to your car. For UTVs and ATVs, their batteries are too small to power any additional accessories like stereos and speakers. Therefore, if you want to add those additional accessories you will need an additional battery as well. In both of these applications, this smart isolator would be perfect to monitor your batteries’ voltage.

Manual Override Switch Included

The NVX XSBi Series includes a manual override function that allows you to disconnect or link the two batteries with the push of a button. This is necessary for emergency situations like jump-starting your vehicle. In this case, you would want to use the override function to manually disconnect the batteries from one another so you could just power the main battery to start your vehicle.

Product Features:

  • NVX XSBI500
  • Mobile Audio Relay and Battery Isolator
  • Great for isolating a second batter making it dedicated to the stereo system
  • Does not create a voltage drop to the second battery like conventional isolators
  • 500 Amps at 12V Continuous Power Handling
  • 700 Amps Surge Power Handling
  • Switching Power: 10 - 16 VDC
  • Draws Less Than 1 Amp When On
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
Check out the NVX XSBI500 Owner's Manual

Specifications & Details


Battery Isolator Features
Compatible Amperage
500 amps
Isolator Type
Relay (Solenoid)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

LS-xsbi500-u8

Weight:

2.00lbs

Internal SKU:

ls-xsbi500-u8

Internal Product ID:

228018

Product and How-to Videos


  • Eliminates Voltage Drop in Multi-Battery Systems with the New NVX Smart Battery Isolators
  • Battery Isolators - Types & How to Install | Car Audio 101

Customer Ratings & Reviews


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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.