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Satisfy your power hungry audio system with high performance batteries and power cells. Find batteries and accessories including terminals, power supplies, isolators and relays.

Car Batteries & Power

Sometimes your high powered audio systems are going to require too much power than what your normal battery is able to produce. Lucky for you, you will find your ideal high-performance power cells right here as we offer the best car battery prices online. We also carry a large variety of auto accessories and battery chargers to help you with the installation of your high performance 12 volt battery or power cell.
Car Batteries & Power Cells
Capacitors
Battery Accessories
Battery Isolators & Relays
Power Inverters
Amplifier Wiring Kits
Big 3 Upgrade Kits
Power & Ground Wire
High Output Alternators
12 Volt Power Supplies
Voltage Monitoring

Top 20 in Car Batteries & Power

500 Amp Relay Isolator (BIR500)

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

$54.99

IN STOCK

2 Pack of Satin Chrome-Plated Positive/Negative Battery Terminals with one 0/1 Gauge Input and two 4 Gauge Outputs

2 Pack of Positive or Negative Battery Terminal Clamp • Connects to the positive or negative battery terminal • Splits the connection to 3 outputs • One 1/0 and Two 4 AWG or 8 AWG outputs

$34.98

IN STOCK

10 Pack of 0 Gauge Waterproof Grommets

• 10 Pack of 1/0 Gauge Waterproof Grommets
• Water Tight Seal
• Locks Securely as Bushing is Tightened
• Heavy Duty Construction
• Corrosion Resistant Material
• Provides a Safe Route for Running Power Cables Through the Firewall

$5.99

IN STOCK

XP FLEX 1/0 AWG Big 3 Upgrade Kit for Audio Sytems up to 250 Amps

• Use to Upgrade Your Factory Power and Ground Wire
• More Effective Than Capacitors When Experiencing Dimming Lights
• Vehicle's Electrical System Will Run More Efficiently
• Use for Systems 250A or Less
• Comes With All Needed Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

Add a pair of Heavy Duty Wire & Cable Cutters and Save $4.50

$49.99

IN STOCK

10 Pack of 4 Gauge Waterproof Grommets

• 10 Pack of 4 Gauge Waterproof Grommets
• Water Tight Seal
• Locks Securely as Bushing is Tightened
• Heavy Duty Construction
• Corrosion Resistant Material
• Provides a Safe Route for Running Power Cables Through the Firewall

$3.99

IN STOCK

1/0 AWG (1/0 Gauge) Firewall Bushing

• 1/0 Gauge Firewall Bushing
• Water tight seal when power wires pass through metal
• Locks securely as bushing is tightened

$8.99

IN STOCK

Gold Battery Terminal Accepts Any Size Gauge Cable w/ Ring Terminal & Pos/Neg Adapter

Gold Digital Battery Terminal • Accepts Any Gauge Cable w/ Ring Terminal • Includes Positive & Negative Adapter • Fast and Easy Installation • High Power Connection • Screw Terminals Hold Cables Securely

$8.99

IN STOCK

Stinger SVMB Blue LED Voltage Display

• LED Voltage Gauge
• Accurate Reading
• Easy to Read LED Display
• 3 Wire Installation
• Flush or Mountable

$22.99

IN STOCK

4 AWG / 4 Gauge Firewall Bushing

• 4 Gauge Firewall Bushing
• Water tight seal when power wires pass through metal
• Locks securely as bushing is tightened

$6.95

IN STOCK

4 AWG (4 Gauge) Firewall Bushing

• 4 Gauge Firewall Bushing
• Water tight seal when power wires pass through metal
• Locks securely as bushing is tightened

$5.99

IN STOCK

Positive or Negative Competition Battery Terminal with Two 1/0-8 Gaquge and One 4-8 Gauge Output

• Positive or Negative Competition Battery Terminal with Two 1/0-8 Gaquge and One 4-8 Gauge Output
• Brass Construction
• (2) 1/0-4 Gauge out
• (1) 4-8 Gauge out
• No Fail Battery Terminal Includes a Negative Post Adapter Collar That Locks Into Place for Tight Grip and Best Connection

$26.95

IN STOCK

Pair of 12 Volt Short Brass Battery Terminal Post Adapters M6

• Pair of 12-Volt Short Brass Terminal Post Adapters
• For Vehicles that Use "Short Style" Battery Posts
• High Quality M6 Threading
• Stainless Steel Hex-Head Bolts Included
• Compatible with All i-BAR Rails

Get 20% Off XS Power 580 M6 Brass Terminal Post Adapter Kit

$10.99

IN STOCK

1/0 AWG Big 3 Upgrade Kit with CCA Wire for Audio Sytems up to 250 Amps

• Upgrade Your Factory Power and Ground Wire
• Perfect for Dealing with Dimming Lights
• Improve the Efficiency of Your Vehicle's Electrical System
• Use for Systems 250A or Less
• Includes All Necessary Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire
• 30% Copper CCA Wire

Add a pair of Heavy Duty Wire & Cable Cutters and Save $4.50

$39.99

IN STOCK

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps

• Upgrade Your Factory Power and Ground Wire
• Perfect for Dealing with Dimming Lights
• Improve the Efficiency of Your Vehicle's Electrical System
• Use for Systems 350A or Less
• Includes All Necessary Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

Add a pair of Heavy Duty Wire & Cable Cutters and Save $4.50

$79.99

IN STOCK

Positive and Negative Battery Terminal Clamp with 4 Outputs (2 1/0 or 4 Gauge and 2 8 Gauge)

• Splits Connection to 4 Outputs
• Brass Construction
• 1/0 or 4-Gauge and 4 or 8-Gauge Outputs

$19.99

IN STOCK

Platinum Battery Terminal Accepts Any Size Gauge Cable w/ Ring Terminal & Pos/Neg Adapter

• Platinum Digital Battery Terminal
• Accepts Any Gauge Cable w/ Ring Terminal
• Includes Positive & Negative Adapter
• Fast and Easy Installation
• High Power Connection
• Screw Terminals Hold Cables Securely

$14.99

IN STOCK

Only 1 Left!

80 Amp Relay and Battery Isolator

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

$15.99

IN STOCK

10 Pack of 8 Gauge Waterproof Grommets

• 10 Pack of 8 Gauge Waterproof Grommets
• Water Tight Seal
• Locks Securely as Bushing is Tightened
• Heavy Duty Construction
• Corrosion Resistant Material
• Provides a Safe Route for Running Power Cables Through the Firewall

$3.99

IN STOCK

200 Amp Relay Isolator (BIR200)

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

Get 10% off an NVX BIR200 when you Purchase a Battery.

$44.99

IN STOCK

Solid Brass Short Side Mount Battery Post Adapter

• Short Side Mount Battery Post Adapter
• Solid Brass Coated
• Features a Connection Terminal for your Vehicle's Electrical Components, as well as a Ring Terminal for your Audio Components

$7.95

IN STOCK

Car Batteries & Power Information

Car Batteries & Power Cells:

For those that are looking to install some moderate to high powered aftermarket audio equipment in their car, it is smart to supplement the vehicles electrical system with a secondary car battery or power cell. It is important to make sure that the new car audio system will not place too much stress on the electrical system. Many times, dimming lights can be a great indicator that the electrical system needs to be upgraded. A great place to start is by replacing the starting battery with a more powerful auto battery. If more power is still needed, then it is recommended that a secondary battery be installed in the car.

Here you will find our selection of high performance car batteries, power cells, battery isolators, and more.



To find out more about car audio batteries, power cells, isolators, call our friendly support team at 1-877-289-7664.