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NVX XSBI200

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

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• 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

Learn more about the xsbi200
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List price $79.99
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$49.99

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Product Highlights


• 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

Description


NVX brand icon

Authorized dealer

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 Details:

  • Used to isolate a second battery powering audio, video, navigation or other equipment
  • Smart battery isolator protects the start battery from excessive discharge
  • Capable of handling 200-Amp continuous and 300-Amp surges
  • The relay coil will operate safely between 10 and 16.5 Volts
  • Can be used to completely isolate equipment from power when the ignition is off
  • Dimensions: 2-3/8" W x 2-3/8" D x 3-3/4" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
PDF icon for NVX XSBI200 Owner's Manual Check out the NVX XSBI200 Owner's Manual

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Frequently Asked Questions (FAQ)


The built-in microprocessor monitors the main battery's voltage. When it hits 13.2V (engine running), it automatically links the batteries. When it drops below 12.7V (engine off), it disconnects to protect your starter.
Yes. This is a Dual Sensing unit. If you have solar panels or a charger connected to your auxiliary battery and it reaches 13.2V, the XSBI200 will link them to "top off" your main starter battery as well.
This is a diagnostic code. 2 Flashes indicates an Over-Voltage fault (>15.5V). 3 Flashes indicates a Voltage Drop fault (<12.7V). Check your alternator or wiring connections if you see these alerts.
Plug the included switch into the 3.5mm jack. If your main battery is too weak to start the car, press this button. It forces a 60-second link to your auxiliary battery so you can jump-start yourself without cables.
Absolutely. For safety, install a 200A fuse or circuit breaker on the power wire between the main battery and the XSBI200, and another between the isolator and the auxiliary battery to protect against shorts.

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Specifications & Details


Battery Isolator Features
Compatible Amperage
200 amps
Surge Amperage
300 amps
Width
2-3/8"
Height
3-3/4"
Depth
2-3/8"
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:

XSBI200

Weight:

1.82lbs

Internal SKU:

xsbi200

Internal Product ID:

165467

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


NVX XSBI200 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Really nice solenoid

This seems to be well made and of good quality. I am really happy there is a simple bypass now in case I need to jump-start my car. NVX has once again done really well.

By Tracey on March 4, 2020 Checkmark Icon Verified purchase

54 found this helpful


NVX XSBI200

It works great! Second, if the main battery fails, you can hit a button inside the car and jump yourself off.

By gdrakec22 on October 9, 2020 Checkmark Icon Verified purchase

53 found this helpful


Can't ask for better price

I got a 50% off email for this which was perfect timing as my headlights dim out on heavy bass and I was already researching about batteries and caps trying to decide what to do. I have not installed it yet as I am waiting on my battery which I also purchased from Sonic Electronix. Sonic Electronix and NVX a killer combo!

By Wade on March 7, 2020 Checkmark Icon Verified purchase

51 found this helpful


Microprocessor Isolator

Finally a microprocessor isolator for a reasonable price. It comes with a bypass switch so you can link the two batteries together and that alone makes it worth the price. I just recently added second battery to my trunk and with everything I do I want the latest and greatest, but still always looking for the best price. Well this NVX microprocessor isolator was definitely cheaper then most of the other brands plus I know with it being NVX I'm getting quality. So final thoughts its super easy to install and comes built with a bypass switch so you don't have to add one if you want that option. Thanks NVX for building a quality isolator for a reasonable price.

By Matthew on February 22, 2020 Checkmark Icon Verified purchase

44 found this helpful


Perfect for my needs

Have had installed in my truck for over 4 years with no issues. Have used the button to bypass and jump the starter battery a couple of times due to cold climate here. Using with all my equipment: 2 powered subs, speakers amp, EQ and crossover.

By Omar on December 7, 2024 Checkmark Icon Verified purchase

7 found this helpful


All ok

Good device, all work super. Easy install

By Aldis on January 29, 2026 Checkmark Icon Verified purchase



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