200 Amp Relay Isolator (BIR200)

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

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Was $59.99 Details
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Product Highlights

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


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Authorized dealer

Isolate with Confidence

The NXV BIR200 Isolator is the perfect solution when adding a secondary battery to your audio system. It allows the second battery to be fully dedicated to the sound system and does not create a voltage drop like common isolators tend to do. The isolator will draw less than 1 amp when your vehicle is powered on. All of this will ensure that your battery will be isolated with confidence!

Lengthen the Life your Batteries

When two vehicle batteries are wired in parallel they have a tendency to charge and drain one another. Installing a relay that disconnects the batteries when the engine is off prevents excessive wear and lengthens the life of the batteries. Whenever you turn your engine back on, the batteries will be connected without any voltage drop to the second battery.

Product Features:

  • 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
  • 200 Amps at 12V Continuous Power Handling
  • 300 Amps Surge Power Handling
  • Switching Power: 10 - 16 VDC
  • Draws Less Than 1 Amp When On
  • Dimensions: 2-3/8"W x 2-3/8"D x 3-3/4"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Battery Isolator Relay Wiring Diagram:

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.

Specifications & Details

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

Item Details



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Customer Reviews

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it works as it should!

its a must have if you are running two batteries. i had mine installed by a certified installer and no more juice sucking from my starting battery. i have a hifonics brx 14001.d and two 15 inch kicker cvr (2010 model) with the kinetik hc600 battery and all is well,so get it and be done with worries about your car not being able to start!

By aaron on October 22, 2014


found this helpful.

Nvx isolator

works good bought with a xs power battery install kit and works good and easy to install

By Brennen on December 6, 2014


found this helpful.

nice power

this relay is what I need to run my stereo without loosing power it allows 2 battery's to run n charge specially now that s hot ac draws lots of current

By JORGE on April 9, 2013


found this helpful.

good deal

Fast shipping. Product came in a well packed box.

By buickbasshead on October 12, 2014


found this helpful.

Great Value

I use this relay to connect the chassis and coach batteries on my motorhome for charging and possible emergency start if a battery runs down.The old one with a different brand name failed in less than 2 years.I now have it wired to a toggle switch as it is not needed often since adding solar panels to my rv. The NVX BIR200 appears to be well built and functions perfectly. It energizes properly and shows no voltage drop across its contacts. Does what I need.

By Michael on November 9, 2017 Checkmark Icon Verified purchase


found this helpful.

Awesome deal!!! You know what you get with this one!

Good for systems that need a lot of extra bass power!

By Anonymous on October 20, 2018


found this helpful.

Just what I needed to solve 2problems

I would recommend this to anyone putting in an aftermarket system using the factory radio.

By Old bass head on September 12, 2020


found this helpful.

Slightly overpriced

Works as it should. Wish the design was a bit better, in order to attach terminals easier, but that's the only thing available for the money. Otherwise, one would either have to take out a mortgage, sell a kidney or design their own.
This product did not exceed my expectations, thus, a three-star rating.

By Robert on January 22, 2020 Checkmark Icon Verified purchase


found this helpful.

Works!, no issues.

Using to isolate a small battery that helps power my 1700watt amp.

By Branden on September 13, 2020


found this helpful.

Good Quality

Nice weight to it and does what’s advertised. Nothing to complain about

By Austin on March 17, 2018


found this helpful.

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