Battery Isolators and Relays at Sonic Electronix
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Battery Isolators & Relays

  • 4.9
8 reviews

200 Amp Relay Isolator (BIR200)

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

Add an NVX Battery Isolator to your Battery Purchase.

$44.99

IN STOCK

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

$54.99

IN STOCK

  • 4.5
4 reviews

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

$11.99

IN STOCK

  • 4.9
8 reviews

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

$48.95

IN STOCK

500 Amp Relay Isolator (BIR500)

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

$59.99

AVAILABLE

Ships at Later Date

  • 5.0
7 reviews

80 Amp Relay and Battery Isolator

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

$12.99

IN STOCK

  • 5.0
7 reviews

80 Amp Battery Isolator (PAC80)

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

$15.99

IN STOCK

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

$62.99

OUT OF STOCK

  • 4.6
5 reviews

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

$14.99

SPECIAL ORDER

Ships at Later Date

  • 5.0
3 reviews

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

$62.97

IN STOCK

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

$42.99

IN STOCK

  • 4.3
3 reviews

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

$89.99

IN STOCK

Only 1 Left!

Stabilizes Voltage to a Constant 12 Volts for Vehicles with "Stop & Restart" Feature (Late Model Vehicles with Fuel-Saving Features)

• 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

$105.99

IN STOCK

Only 3 Left!

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

$52.73

IN STOCK

Only 2 Left!

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

$175.99

IN STOCK

Only 2 Left!

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

$62.31

IN STOCK

Only 2 Left!

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

$65.78

SPECIAL ORDER

Ships at Later Date

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

$216.33

IN STOCK

Only 3 Left!

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

$122.79

IN STOCK

Only 2 Left!

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

$112.77

IN STOCK

Only 2 Left!

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