Garage
Shop

Car Batteries, Power & Battery Accessories

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.

Top sellers

Loading...
filter-icon Filters & Sort

NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper (Open Box, Great)

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

XBG3PK big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $114.99 Details
$69.99

In stock

Only 3 Left!

• 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

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE) (Open Box, Great)

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

XCAP10H big
Go to item page Right Arrow Icon of Right Arrow

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $371.99 Details
$209.99

In stock

Only 2 Left!

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

NVX XSBI500 (Open Box, Great)

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

XSBI500 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $99.99 Details
$52.49

In stock

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

NVX BIR500 (Open Box, Great)

500 Amp Relay Isolator (BIR500)

BIR500 big
Go to item page Right Arrow Icon of Right Arrow

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 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $89.99 Details
$55.99

In stock

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

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE) (Like New (Open Box))

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

XCAP10H big
Go to item page Right Arrow Icon of Right Arrow

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $371.99 Details
$254.99

In stock

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

NVX XSBI200 (Open Box, Great)

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

XSBI200 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $79.99 Details
$49.99

In stock

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

NVX XCAP1F (Open Box, Good)

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

XCAP1F big
Go to item page Right Arrow Icon of Right Arrow

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

• For Systems Up To 1200 Watts
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $131.99 Details
$65.99

In stock

Only 3 Left!

• For Systems Up To 1200 Watts
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

NVX XFMANL (Open Box, Great)

0/4 Gauge AWG ANL/Mini-ANL Modular Linkable In-ine Fuse Holder for Car Audio and Marine Audio

XFMANL big
Go to item page Right Arrow Icon of Right Arrow

0/4 Gauge AWG ANL/Mini-ANL Modular Linkable In-ine Fuse Holder for Car Audio and Marine Audio

• Pack of ANL Fuses
• See-through windows allow for easy inspection
• High-temperature, impact-resistant plastic casings
• Ultimate circuit protection
• High conductivity plating
• Maximum current transfer

shipping truck icon
Fast 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $59.99 Details
$10.49

In stock

• Pack of ANL Fuses
• See-through windows allow for easy inspection
• High-temperature, impact-resistant plastic casings
• Ultimate circuit protection
• High conductivity plating
• Maximum current transfer

NVX XW0BK5 (Like New (Open Box))

5 ft. of Frosted Black EnvyFlex True Spec 1/0-Gauge Power/Ground Wire Cable

XW0BK5 big
Go to item page Right Arrow Icon of Right Arrow

5 ft. of Frosted Black EnvyFlex True Spec 1/0-Gauge Power/Ground Wire Cable

• 5 Ft. 1/0 EnvyFlex Gauge Power or Ground Cable
• Metallic Gray Insulation
• Flexible and Easy to Install
• Silver-Tinned 100% Virgin Copper

shipping truck icon
Fast 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $39.99 Details
$21.24

In stock

Only 1 Left!

• 5 Ft. 1/0 EnvyFlex Gauge Power or Ground Cable
• Metallic Gray Insulation
• Flexible and Easy to Install
• Silver-Tinned 100% Virgin Copper

NVX XBTPN08 (Open Box, Great)

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

XBTPN08 big
Go to item page Right Arrow Icon of Right Arrow

Positive or 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

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $24.99 Details
$10.49

In stock

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

NVX XW4BL20 (Open Box, Good)

20 ft. of Metallic Powder Blue EnvyFlex True Spec 4-Gauge Power/Ground Wire Cable

XW4BL20 big
Go to item page Right Arrow Icon of Right Arrow

20 ft. of Metallic Powder Blue EnvyFlex True Spec 4-Gauge Power/Ground Wire Cable

• Metallic Powder Blue 4-Gauge Power/Ground Wire Cable
• Silver-Tinned 100% Virgin Copper
• EnvyFlex Outer Jacket
• Length: 20 Feet

shipping truck icon
Fast 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $59.99 Details
$32.99

In stock

Only 1 Left!

• Metallic Powder Blue 4-Gauge Power/Ground Wire Cable
• Silver-Tinned 100% Virgin Copper
• EnvyFlex Outer Jacket
• Length: 20 Feet

NVX XBTU (Open Box, Great)

Universal Positive/Negative Satin Chrome Battery Terminal w/ 0/1 Gauge Input & 2 4 Gauge Outputs

XBTU big
Go to item page Right Arrow Icon of Right Arrow

Universal Positive/Negative Satin Chrome Battery Terminal w/ 0/1 Gauge Input & 2 4 Gauge Outputs

• 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 4/8 Gauge outputs

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $24.99 Details
$14.99

In stock

• 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 4/8 Gauge outputs

NVX BIR200 (Open Box, Good)

200 Amp Relay Isolator (BIR200)

BIR200 big
Go to item page Right Arrow Icon of Right Arrow

200 Amp Relay Isolator (BIR200)

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

shipping truck icon
Fast 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $59.99 Details
$29.99

In stock

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

NVX XMFH48 (Open Box, Good)

4/8 Gauge AWG Mini-ANL/MANL/AFS In-ine Fuse Holder for Car Audio and Marine Audio (World's Smallest)

XMFH48 big
Go to item page Right Arrow Icon of Right Arrow

4/8 Gauge AWG Mini-ANL/MANL/AFS In-ine Fuse Holder for Car Audio and Marine Audio (World's Smallest)

• Works with Mini ANL (MANL) or AFS Fuses
• Accepts 4 or 8 Gauge Wire
• All Brass Construction
• Polycarbonate Base and Cover

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $19.99 Details
$5.99

In stock

Only 2 Left!

• Works with Mini ANL (MANL) or AFS Fuses
• Accepts 4 or 8 Gauge Wire
• All Brass Construction
• Polycarbonate Base and Cover

NVX XW4GR20 (Open Box, Great)

20 ft. of Metallic Gray EnvyFlex True Spec 4-Gauge Power/Ground Wire Cable

XW4GR20 big
Go to item page Right Arrow Icon of Right Arrow

20 ft. of Metallic Gray EnvyFlex True Spec 4-Gauge Power/Ground Wire Cable

Metallic Gray 4-Gauge Power/Ground Wire Cable • Silver-Tinned 100% Virgin Copper • EnvyFlex Outer Jacket • Length: 20 Feet

shipping truck icon
Fast 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $69.99 Details
$45.99

In stock

Only 1 Left!

Metallic Gray 4-Gauge Power/Ground Wire Cable • Silver-Tinned 100% Virgin Copper • EnvyFlex Outer Jacket • Length: 20 Feet

NVX XBTPN08 (Open Box, Good)

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

XBTPN08 big
Go to item page Right Arrow Icon of Right Arrow

Positive or 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

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $24.99 Details
$12.99

In stock

Only 1 Left!

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

NVX XMANL04 (Open Box, Great)

1/0 or 4 Gauge AWG ANL/Mini-ANL In-ine Fuse Holder for Car Audio and Marine Audio

XMANL04 big
Go to item page Right Arrow Icon of Right Arrow

1/0 or 4 Gauge AWG ANL/Mini-ANL In-ine Fuse Holder for Car Audio and Marine Audio

• ANL/Mini-ANL Fuse Holder
• One 1/0 - 4 Gauge Input
• One 1/0 - 4 Gauge Output
• Solid Brass And Satin Chrome Plated
• High-Temperature Polycarbonate Base And Cover

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $24.99 Details
$15.99

In stock

• ANL/Mini-ANL Fuse Holder
• One 1/0 - 4 Gauge Input
• One 1/0 - 4 Gauge Output
• Solid Brass And Satin Chrome Plated
• High-Temperature Polycarbonate Base And Cover

NVX XSBI80 (Open Box, Great)

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

XSBI80 big
Go to item page Right Arrow Icon of Right Arrow

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 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $49.99 Details
$17.49

In stock

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

NVX XSBI500 (Open Box, Good)

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

XSBI500 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
FREE 1-day shipping to OH. Get it Wed, Nov. 19

empty

Was $99.99 Details
$66.27

In stock

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

NVX XBTU (Open Box, Good)

Universal Positive/Negative Satin Chrome Battery Terminal w/ 0/1 Gauge Input & 2 4 Gauge Outputs

XBTU big
Go to item page Right Arrow Icon of Right Arrow

Universal Positive/Negative Satin Chrome Battery Terminal w/ 0/1 Gauge Input & 2 4 Gauge Outputs

• 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 4/8 Gauge outputs

shipping truck icon
Fast 2-day shipping to OH. Get it Thu, Nov. 20

empty

Was $24.99 Details
$8.99

In stock

Only 1 Left!

• 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 4/8 Gauge outputs

Items per page: 20

    Clear all
    ADVERTISEMENT

    FAQ Frequently asked questions in Car Batteries, Power & Battery Accessories


    Car batteries, power, and battery accessories are crucial components for any vehicle.

    Car Batteries: These are rechargeable devices that store electrical energy in a chemical form, converting it into electrical power to start your vehicle's engine and power various electrical systems. They are essential because they provide the initial jolt of electricity needed to start the engine and continue to supply power when the alternator isn't running, such as when the engine is off.

    Power Accessories: These include alternators and generators, which recharge the battery and supply power to the vehicle's electrical systems while the engine is running. Voltage regulators ensure a stable supply of electrical power, preventing overcharging. Without these components, your vehicle's battery would eventually run out of power, leaving you stranded.

    Battery Accessories: These encompass components like battery terminals, cables, and connectors. Properly maintained connections are essential for the efficient flow of electrical power within your vehicle. Corroded or loose terminals can lead to poor electrical performance and starting issues.

    In summary, car batteries, power, and battery accessories are essential because they provide the electrical energy needed to start your vehicle, keep it running, and operate various electrical systems, ensuring your vehicle functions properly and reliably.

    Selecting the correct battery terminal involves considering the type of battery and the cable connection you have. First, determine if you have a top-post or side-post battery, as different terminals are designed to fit each type. Next, identify the cable size (usually stated in gauge) to ensure the terminal can accommodate the cable diameter properly. Look for high-quality materials such as copper or brass terminals, as they provide excellent conductivity and resist corrosion. Some terminals also come with additional features, like multiple connection points for additional accessories. It's crucial to choose a terminal that matches your battery and cable specifications to ensure a secure and reliable electrical connection.
    Yes, a battery disconnect switch is an effective way to prevent battery drain when your vehicle is not in use for an extended period. When the switch is in the ""off"" position, it completely cuts off power flow from the battery to the vehicle's electrical system. This prevents any parasitic draws or power-consuming devices from draining the battery during storage or inactivity. Battery disconnect switches are particularly useful for seasonal or seldom-used vehicles, such as boats, RVs, or classic cars. By using a disconnect switch, you can preserve the battery's charge and extend its lifespan, ensuring it remains ready to start your vehicle when needed.

    A battery charger or maintainer helps prolong the life of your car battery by ensuring it remains adequately charged, especially during periods of inactivity. When a vehicle is not driven regularly, the battery can gradually lose charge due to natural self-discharge and parasitic draws. Battery chargers and maintainers are designed to provide a steady and controlled flow of current to the battery, replenishing any lost charge. This prevents the battery from fully discharging, which can lead to sulfation and reduced battery capacity. Additionally, some smart chargers have maintenance modes that automatically adjust the charging rate to keep the battery at an optimal charge level without overcharging it. By keeping the battery in good condition and fully charged, a battery charger or maintainer helps extend its overall lifespan and ensures reliable performance.
    Yes, safety is essential when working with car battery accessories. Before attempting any installation or maintenance, always disconnect the vehicle's negative battery terminal to avoid accidental electrical shocks or short circuits. When working with battery terminals, wear appropriate safety gear, such as gloves and eye protection, to protect against battery acid and corrosion. Ensure all connections are tight and secure to prevent power loss or electrical hazards. When using battery chargers or maintainers, follow the manufacturer's instructions carefully and avoid overcharging the battery. Overcharging can lead to hydrogen gas buildup, which is flammable and poses a safety risk. It's also crucial to work in a well-ventilated area to dissipate any battery gases safely. If you are unsure or uncomfortable with any aspect of the installation or maintenance, it's best to seek professional assistance to ensure proper and safe operation of your car battery accessories.

    All About

    Car Batteries, Power & Battery Accessories
    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.

    Looking to enhance your car's battery performance and optimize your car audio system? Look no further! Sonic Electronix offers a wide range of top-quality car battery accessories that ensure reliable power supply and improved audio performance. Discover the best car battery accessories on this page and take your car audio experience to new heights!

    Car Battery Accessories - Empowering Your Vehicle's Electrical System

    Car battery accessories play a crucial role in supporting your car's electrical system and ensuring a smooth and efficient power flow. These accessories are designed to optimize your car battery's performance and enhance the overall functionality of your vehicle's electrical components.

    One of the primary car battery accessories is the battery terminal. High-quality battery terminals provide a secure connection between your car's battery and the power cables, reducing the risk of power loss and voltage drops. Upgrading to heavy-duty battery terminals improves conductivity, reduces resistance, and maximizes the efficiency of your car's electrical system.

    Another essential car battery accessory is the battery isolator. This device allows you to connect multiple batteries to your car's electrical system while preventing power drain from one battery to another. A battery isolator ensures that each battery serves its intended purpose and remains fully charged, making it ideal for vehicles with multiple batteries, such as RVs and marine applications.

    Expert Assistance - Your Trusted Car Audio Advisors

    At Sonic Electronix, we are dedicated to providing our customers with the best car battery accessories tailored to their unique needs. Our team of car audio experts is readily available to assist you in finding the perfect battery accessories to complement your car audio setup. Whether you need help choosing the right battery terminal or battery isolator, we have the knowledge and expertise to guide you through the selection process.

    Feel free to call us at 1-502-200-8010, and our friendly and experienced staff will be delighted to answer your questions, offer recommendations, and ensure you have a seamless shopping experience.

    ADVERTISEMENT
    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?
    Save up to 10 different vehicles in your garage

    2006 Lamborghini Murcielago

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner’s manual
    • Vehicle’s insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver’s side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon