Battery Isolators & Relays

The perfect accessory for installing multiple car batteries in a vehicle. We offer a variety of different battery isolators designed for different battery amp ratings.

filter-icon Filters & Sort
Loading...
Filters

We are sorry, no available results!

This is the total number of amps that the battery isolator is designed to continually receive.
NVX BIR500

500 Amp Relay Isolator (BIR500)

BIR500 main
Go to item page

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 to VA. Get it Fri, June 16

empty

29
Was $89.99 Details
$59.99

In stock

BIR500 small

Item added to your cart.

Price: $59.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
The Install Bay IB500

500 Amp Battery Isolator and Relay

IB500 main
Go to item page

500 Amp Battery Isolator and Relay

• Battery Isolator and Relay
• 500 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

35
Was $69.99 Details
$65.99

In stock

• Battery Isolator and Relay
• 500 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

IB500 small

Item added to your cart.

Price: $65.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Stinger SGP35

500 Amp Relay and Isolator

SGP35 main
Go to item page

500 Amp Relay and Isolator

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

1
Was $189.00 Details
$87.99

In stock

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

SGP35 small

Item added to your cart.

Price: $87.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Stinger SGP32

200 Amp High Current Power Relay Battery Isolator

Go to item page

200 Amp High Current Power Relay Battery Isolator

• 200 amp Battery Isolator and Relay
• Prevents primary battery discharge
• Maximum current transfer
• Extends battery life
• Universal 12V Applications

empty

8
Was $114.00 Details
$55.99

• 200 amp Battery Isolator and Relay
• Prevents primary battery discharge
• Maximum current transfer
• Extends battery life
• Universal 12V Applications

SGP32 small

Item added to your cart.

Price: $55.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
NVX XSBI80

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

XSBI80 main
Go to item page

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
Fast 3-day shipping to VA. Get it Wed, June 14

empty

2
Was $49.99 Details
$29.99

In stock

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

NVX BIR80

80 Amp Relay and Battery Isolator

BIR80 main
Go to item page

80 Amp Relay and Battery Isolator

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

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

9
Was $19.99 Details
$14.99

In stock

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

The Install Bay IB200

200 Amp Battery Isolator and Relay

IB200 main
Go to item page

200 Amp Battery Isolator and Relay

• Battery Isolator and Relay
• 200 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

shipping truck icon
Get it Fri, June 16 to VA. Order $49+ to ship free.

empty

14
Was $79.99 Details
$46.99

Available

Ships in 10-14 days

• Battery Isolator and Relay
• 200 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

IB200 small

Item added to your cart.

Price: $46.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
The Install Bay IB80

80 Amp Battery Isolator and Relay

IB80 main
Go to item page

80 Amp Battery Isolator and Relay

• Battery Isolator and Relay
• 80 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

4
Was $29.99 Details
$17.99

In stock

Only 3 Left!

• Battery Isolator and Relay
• 80 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

Install Bay IBSP702

70 Amp 4-Post Cooper Bussman Battery Isolator

IBSP702 main
Go to item page

70 Amp 4-Post Cooper Bussman Battery Isolator

• 70A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, June 14

empty

Was $93.46 Details
$59.99

In stock

Only 2 Left!

• 70A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

IBSP702 small

Item added to your cart.

Price: $59.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Install Bay Battery Isolator Installation Kit (IB1882)

Includes All Necessary Components for a Complete Installation

IB1882 main
Go to item page

Includes All Necessary Components for a Complete Installation

• Complete Battery Isolator Installation Kit
• All Necessary Wiring and Hardware
• 8 AWG Cable
• 50A Light Duty Automotive Reset Breaker

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

Was $79.09 Details
$47.99

In stock

Only 1 Left!

• Complete Battery Isolator Installation Kit
• All Necessary Wiring and Hardware
• 8 AWG Cable
• 50A Light Duty Automotive Reset Breaker

IB1882 small

Item added to your cart.

Price: $47.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Install Bay IB144CD

GM Delco CS Series Alternator Connection Kit

IB144CD main
Go to item page

GM Delco CS Series Alternator Connection Kit

• Delco CS Series Alternator Kit
• Ensures Safe Installation of Multi-Battery Systems
• Includes Circuit Breaker
• Wire and Hardware Included

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

Was $60.79 Details
$37.99

In stock

Only 1 Left!

• Delco CS Series Alternator Kit
• Ensures Safe Installation of Multi-Battery Systems
• Includes Circuit Breaker
• Wire and Hardware Included

Crux REL-SOC

Relay Socket with Leads

REL-SOC main
Go to item page

Relay Socket with Leads

• Relay Socket with Leads

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

Was $2.95 Details
$1.95

In stock

• Relay Socket with Leads

Crux STPWR-01

Retrofit Performance Solution for Vehicles with "Stop-Start" feature

STPWR-01 main
Go to item page

Retrofit Performance Solution for Vehicles with "Stop-Start" feature

• Digitally stabilizes voltage to a constant +12V
• For late model vehicles equipped with fuel-saving features
• Engages during the "Stop & Restart" process
• Filters out unwanted fluctuations and voltage interference waves
• Maximum Amperage: 4A
• Dimensions: 3.5"L x 2.5"W x 7"H

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

Was $199.95 Details
$123.95

In stock.

• Digitally stabilizes voltage to a constant +12V
• For late model vehicles equipped with fuel-saving features
• Engages during the "Stop & Restart" process
• Filters out unwanted fluctuations and voltage interference waves
• Maximum Amperage: 4A
• Dimensions: 3.5"L x 2.5"W x 7"H

STPWR-01 small

Item added to your cart.

Price: $123.95

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Install Bay IBSP12023

120 Amp 4-Post Cooper Bussman Battery Isolator

IBSP12023 main
Go to item page

120 Amp 4-Post Cooper Bussman Battery Isolator

• 120A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, June 14

empty

Was $157.87 Details
$99.99

Available

Ships in 10-14 days

• 120A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

IBSP12023 small

Item added to your cart.

Price: $99.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Crux REL-30

30 Amps Automotive Relay

REL-30 main
Go to item page

30 Amps Automotive Relay

• Automotive Relay
• 30 amps
• Universal

shipping truck icon
Fast 3-day shipping to VA. Get it Wed, June 14

empty

Was $3.95 Details
$1.95

In stock.

• Automotive Relay
• 30 amps
• Universal

Install Bay IBSP13023

130 Amp 4-Post Cooper Bussman Battery Isolator

IBSP13023 main
Go to item page

130 Amp 4-Post Cooper Bussman Battery Isolator

• 130A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

Was $171.90 Details
$125.99

Available

Ships in 10-14 days

• 130A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

IBSP13023 small

Item added to your cart.

Price: $125.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
NVX BIR200

200 Amp Relay Isolator (BIR200)

Go to item page

200 Amp Relay Isolator (BIR200)

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

empty

12
Was $59.99 Details
$39.99

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

Stinger SGP38

80 amp Battery Isolator and Relay

Go to item page

80 amp Battery Isolator and Relay

• 80 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Universal 12V Applications
• Extends Battery Life
• Water Resistant Black Phenolic Plastic
• 100,000 Mechanical Cycle Life

empty

5
Was $39.00 Details
$14.99

• 80 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Universal 12V Applications
• Extends Battery Life
• Water Resistant Black Phenolic Plastic
• 100,000 Mechanical Cycle Life

NVX XSBI500

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

Go to item page

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

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

empty

4
Was $99.99 Details
$79.99

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

XSBI500 small

Item added to your cart.

Price: $79.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
NVX XSBI200

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

Go to item page

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

empty

4
Was $79.99 Details
$59.99

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

XSBI200 small

Item added to your cart.

Price: $59.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
    clear all
    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!
    Why Shop With Us?

    Add vehicle

    Save up to 10 different vehicles in your garage

    Loading...
    < Back