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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Audio Installation & Accessories
  4. Discontinued Car Batteries, Power & Battery Accessories
  5. Discontinued Battery Isolators & Relays

Discontinued 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.

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This is the total number of amps that the battery isolator is designed to continually receive.
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NVX XSBI500 (Open Box, Good)

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

XSBI500 big DISCONTINUED
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NVX XSBI500 (Open Box, Good)

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

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

NVX XSBI80( Open Box Complete)

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

XSBI80 big DISCONTINUED
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NVX XSBI80( Open Box Complete)

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

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

PAC PAC-80

80 Amp Battery Isolator (PAC80)

PAC-80 big DISCONTINUED
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PAC PAC-80

80 Amp Battery Isolator (PAC80)

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

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

Xscorpion RL80

80 Amp High Current Relay Car Battery Isolator

RL80 big DISCONTINUED
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Xscorpion RL80

80 Amp High Current Relay Car Battery Isolator

• High Current Relay Car Battery Isolator
• Reliant & Efficient Way to Add a Secondary Battery to Any System
• Connect Relays to Operate
• Amperage: 80 Amps

4

• High Current Relay Car Battery Isolator
• Reliant & Efficient Way to Add a Secondary Battery to Any System
• Connect Relays to Operate
• Amperage: 80 Amps

NVX BIR200 Open Box Complete

200 Amp Relay Isolator (BIR200)

BIR200 big DISCONTINUED
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NVX BIR200 Open Box Complete

200 Amp Relay Isolator (BIR200)

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

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

NVX BIR500 (Open Box, Good Condition Used)

500 Amp Relay Isolator (BIR500)

BIR500 big DISCONTINUED
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NVX BIR500 (Open Box, 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

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

Stinger S12023

120 Amp 4-Post Battery Isolator (Blue)

S12023 big DISCONTINUED
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Stinger S12023

120 Amp 4-Post Battery Isolator (Blue)

• 120 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Extends Battery Life
• Universal 12V Applications

• 120 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Extends Battery Life
• Universal 12V Applications

PAC SPR-200

Battery Isolator / Monitor

SPR-200 big DISCONTINUED
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PAC SPR-200

Battery Isolator / Monitor

• Battery Isolator And Monitor Kit
• BG12 Battery Monitor And PAC-200 Relay Isolates The Primary Battery From The Secondary Battery
• Maintains Charge On Both Batteries
• Requires No Alteration Of The Vehicle's Wiring
•

3

• Battery Isolator And Monitor Kit
• BG12 Battery Monitor And PAC-200 Relay Isolates The Primary Battery From The Secondary Battery
• Maintains Charge On Both Batteries
• Requires No Alteration Of The Vehicle's Wiring
•

Stinger S2402

240 AMP 3-Post Battery Isolator

S2402 big DISCONTINUED
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Stinger S2402

240 AMP 3-Post Battery Isolator

• 240 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Extends Battery Life
• Heat Sink To Dissipate Unwanted Heat

• 240 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Extends Battery Life
• Heat Sink To Dissipate Unwanted Heat

Xscorpion RL200

200 Amp High Current Relay Car Battery Isolator

RL200 big DISCONTINUED
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Xscorpion RL200

200 Amp High Current Relay Car Battery Isolator

• High Current Relay Car Battery Isolator
• Reliant & Efficient Way to Add a Secondary Battery to Any System
• Connect Relays to Operate
• Amperage: 200 Amps

2

• High Current Relay Car Battery Isolator
• Reliant & Efficient Way to Add a Secondary Battery to Any System
• Connect Relays to Operate
• Amperage: 200 Amps

PAC PAC-200

200 Amp Battery Isolator (PAC200)

PAC-200 big DISCONTINUED
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PAC PAC-200

200 Amp Battery Isolator (PAC200)

• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Draws Less Than 1 Amp When On
• Switching Power: 10 - 16 VDC

10

• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Draws Less Than 1 Amp When On
• Switching Power: 10 - 16 VDC

PAC BG-12

Battery Guard Indicator and Load Shut Down

BG-12-2 big DISCONTINUED
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PAC BG-12

Battery Guard Indicator and Load Shut Down

• Battery Monitor
• Microprocessor That Constantly Monitors The Voltage Available
• Led Changes Color With State Of Battery
• Connects To The Dash Lamps To Dim The LED At Night

1

• Battery Monitor
• Microprocessor That Constantly Monitors The Voltage Available
• Led Changes Color With State Of Battery
• Connects To The Dash Lamps To Dim The LED At Night

PAC PAC-500

500 Amp Relay / Battery Isolator

PAC-500 big DISCONTINUED
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PAC PAC-500

500 Amp Relay / Battery Isolator

• 500 Amp Relay / Battery Isolator
• Used To Isolate A Second Battery Electrical Equipment
• Prevents The Equipment From Discharging The Main Battery
• Handles 500 Amps Continuous
• 700 Amp Surges

3

• 500 Amp Relay / Battery Isolator
• Used To Isolate A Second Battery Electrical Equipment
• Prevents The Equipment From Discharging The Main Battery
• Handles 500 Amps Continuous
• 700 Amp Surges

Install Bay IBSP24023

240 Amp 4-Post Cooper Bussman Battery Isolator

IBSP24023 big DISCONTINUED
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Install Bay IBSP24023

240 Amp 4-Post Cooper Bussman Battery Isolator

• 240A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

• 240A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

Install Bay IBSP9523

95 Amp 4-Post Cooper Bussman Battery Isolator

IBSP9523 big DISCONTINUED
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Install Bay IBSP9523

95 Amp 4-Post Cooper Bussman Battery Isolator

• 95A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

• 95A Four-Post Battery Isolator
• Works for Light Trucks, RVs and Marine Applications
• Solid State Design
• Simple Connection Setup

Install Bay IB500 Open Box Complete (Very Good, Used)

500 Amp Battery Isolator and Relay

IB500 big DISCONTINUED
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Install Bay IB500 Open Box Complete (Very Good, Used)

500 Amp Battery Isolator and Relay

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

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

NVX BIR500 - Open Box, Acceptable Condition (Used)

500 Amp Relay Isolator (BIR500) Open Box Complete (Acceptable, Used)

BIR500 big DISCONTINUED
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NVX BIR500 - Open Box, Acceptable Condition (Used)

500 Amp Relay Isolator (BIR500) Open Box Complete (Acceptable, Used)

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

NVX BIR200 (Open Box, Complete)

200 Amp Relay Isolator (BIR200)

BIR200 big DISCONTINUED
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NVX BIR200 (Open Box, Complete)

200 Amp Relay Isolator (BIR200)

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

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

Xscorpion BI200

200 Amp Car Battery Isolator & Relay w/ Control Box

BI200 big DISCONTINUED
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Xscorpion BI200

200 Amp Car Battery Isolator & Relay w/ Control Box

• Car Battery Isolator & Relay w/ Control Box • Prevents Loads on Auxiliary Battery from draining the Main Battery • Works with all Alternator Types • Amperage: 200 Amps

1

• Car Battery Isolator & Relay w/ Control Box • Prevents Loads on Auxiliary Battery from draining the Main Battery • Works with all Alternator Types • Amperage: 200 Amps

PAC PAC-200 OPEN BOX COMPLETE

200 Amp Battery Isolator (PAC200)

PAC-200 big DISCONTINUED
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PAC PAC-200 OPEN BOX COMPLETE

200 Amp Battery Isolator (PAC200)

Open Box Complete
• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Draws Less Than 1 Amp When On
• Switching Power: 10 - 16 VDC

Open Box Complete
• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Draws Less Than 1 Amp When On
• Switching Power: 10 - 16 VDC

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    FAQ Frequently asked questions in Discontinued Battery Isolators & Relays

    Battery Isolators & Relays Frequently Asked Questions (FAQ)

    A battery isolator in car audio is a device that allows multiple batteries to be connected in a vehicle, ensuring that the starting battery remains charged while the secondary battery supplies power to the audio system. Here's how it works and its benefits:

    1. Separation of Batteries: A battery isolator separates the vehicle's starting battery from the secondary or auxiliary batteries. This ensures that the power used by the audio system doesn't drain the starting battery.

    2. Simultaneous Charging: When the vehicle's engine is running, the alternator charges the starting battery. Once the starting battery is fully charged, the isolator directs the charging current to the secondary batteries. This ensures all batteries are charged efficiently without overcharging.

    3. Prevents Drain on Starting Battery: High-powered audio systems can draw significant power, especially with amplifiers and subwoofers. By having a separate battery for the audio system, you prevent the main starting battery from being drained. This ensures that the vehicle can always start even after prolonged use of the audio system when the engine is off.

    4. Extended Battery Life: By ensuring that no single battery is overly discharged, battery isolators can help extend the lifespan of the batteries.

    5. Enhanced Audio Performance: Some car audio enthusiasts believe that by having a dedicated battery for the audio system, it can deliver cleaner power to the audio components, potentially improving sound quality.

    6. Safety: In the event of a short circuit or an issue with the audio system, the isolator ensures that the starting battery remains unaffected, allowing the vehicle to be started and moved if necessary.

    A battery isolator works as a one-way valve for electrical current, allowing power to flow from the vehicle's charging system to the auxiliary batteries but preventing it from flowing back to the primary battery. When the engine is running and the alternator is producing electricity, the battery isolator detects the voltage increase and engages the connection between the primary and auxiliary batteries, allowing them to charge simultaneously. Once the engine is turned off, the battery isolator disengages the connection between the batteries, ensuring that the primary battery remains isolated and retains its charge. This way, even if your auxiliary accessories draw power from the second battery, your vehicle's main battery remains fully charged and ready to start the engine when needed.
    While some experienced DIY enthusiasts may be able to install a battery isolator themselves, it's recommended to seek professional help, especially if you're not familiar with automotive electrical systems. Proper installation is crucial for the safe and efficient operation of your battery isolator and electrical components. Professional installation ensures that the battery isolator is correctly connected to the charging system, batteries, and accessories, preventing any electrical issues or safety hazards. Additionally, a professional installer can provide guidance on selecting the right type and capacity of battery isolator for your specific vehicle and power requirements. Remember that working with electrical systems can be dangerous if not done correctly. Professional installation gives you peace of mind that your battery isolator is installed properly, providing optimal performance and protection for your vehicle's electrical system.
    While both battery isolators and voltage-sensitive relays (VSRs) serve a similar purpose of charging multiple batteries from a single charging source, they differ in their operation and design. A battery isolator is a diode-based device that allows power to flow in one direction only. It maintains electrical isolation between the primary and auxiliary batteries, ensuring that they do not discharge power between each other. A diode-based isolator typically has a fixed voltage drop, meaning that a small amount of voltage is lost during the charging process. On the other hand, a voltage-sensitive relay (VSR) is an electronically controlled device that engages or disengages the connection between batteries based on their voltage levels. When the vehicle's charging system produces a sufficient voltage, the VSR connects the batteries, allowing them to charge together. When the engine is turned off, and the voltage drops, the VSR disconnects the batteries, preventing any drain from the auxiliary battery to the main battery. VSRs are generally more efficient in terms of voltage loss compared to diode-based isolators. The choice between the two depends on your specific needs and preferences.
    Using a battery isolator with lithium-ion (Li-ion) batteries requires careful consideration and compatibility. Unlike traditional lead-acid batteries, Li-ion batteries have different charging requirements and voltage characteristics. Many standard battery isolators are designed for lead-acid batteries and may not be suitable for Li-ion batteries due to their unique charging needs. Li-ion batteries require specific charging profiles to ensure their longevity and safety. If you plan to use Li-ion batteries in your vehicle's dual battery setup, it's essential to choose a battery isolator specifically designed and rated for use with Li-ion batteries. These isolators will provide the appropriate charging profile and protection for your Li-ion batteries, ensuring their optimal performance and safety. Always refer to the manufacturer's specifications and recommendations for both the battery isolator and Li-ion batteries to ensure compatibility and proper operation. If you have any doubts or questions, consult with a knowledgeable professional to select the right components for your setup.

    All About Discontinued Battery Isolators & Relays

    Looking for reliable circuit breakers to protect your car's electrical system? Look no further! Sonic Electronix offers a wide selection of premium circuit breakers that provide enhanced safety and performance. Explore our collection now to find the best quality circuit breakers that ensure optimal protection for your vehicle's electronics. Upgrade your car's electrical setup with our trusted circuit breakers from leading brands. Secure your vehicle's electrical components today!

    Circuit breakers are essential components that protect your car's electrical system from overload and short circuit conditions. They act as automatic switches that trip when excessive current flows through the circuit, interrupting the power supply and preventing damage to sensitive electronics. Some key advantages of incorporating high-quality circuit breakers in your vehicle's electrical setup include:

    Enhanced Safety: Circuit breakers offer a safer alternative to fuses as they can be easily reset after tripping, eliminating the need for replacements.

    Continuous Protection: Once tripped, circuit breakers can be manually reset, ensuring uninterrupted power flow after the underlying issue is resolved.

    Versatility: Circuit breakers are available in various amperage ratings and configurations, making them suitable for different applications and devices.

    Cost-Effectiveness: Unlike fuses that need frequent replacement, circuit breakers provide long-term cost savings due to their reusable nature.

    At Sonic Electronix, we take pride in offering top-quality circuit breakers to meet the unique needs of our customers. Our vast selection includes circuit breakers of different amperage ratings and sizes to cater to diverse vehicle requirements. Our knowledgeable staff is always ready to assist you in finding the ideal circuit breakers for your specific application. If you have any questions or need guidance, do not hesitate to call us at 1-502-200-8010, and our friendly team will be delighted to help.

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