Best Car Audio Battery That Will Blow Your Mind Today!

Many drivers find their car audio systems underperforming due to weak or unreliable power sources. A dependable battery is key to maintaining crisp sound quality and consistent performance, especially when using aftermarket audio setups.

This product category is designed for those who want enhanced audio reliability in their vehicles, whether for casual listening or extended use during road trips. High-quality car audio batteries offer benefits like longer life, stable voltage delivery, and resistance to vibrations that standard car batteries might not handle well.

In this review, we will explore some of the most reliable options available, looking at their features, performance, and value. The goal is to help you select a battery that keeps your sound system running smoothly and meets your specific audio needs.

Powering Your Ride with Unmatched Sound Performance: Top Choices for Long-Lasting Audio Energy

Image	Product	Price
Our Recommended 1	DOWN4SOUND D4S LTO 6.0 12V Lithium Battery 3000-5000W Car Audio	Check Price
Our Recommended 2	XS Power XP750 XP Series 12V 750 Amp AGM Supplemental	Check Price
Our Recommended 3	XS Power D3400 XS Series 12V 3,300 Amp AGM High	Check Price

1. DOWN4SOUND D4S LTO 6.0 12V Lithium Battery 3000-5000W Car Audio

Experience exceptional power and reliability with the DOWN4SOUND D4S LTO 0 12V Lithium Battery designed specifically for car audio systems.

Its advanced lithium titanate oxide technology delivers safe, efficient energy for high-performance sound setups.

Compact and ultra-lightweight, this battery integrates seamlessly with stock charging systems without needing extra voltage boosters. It supports an impressive range of power outputs, making it a versatile choice for audio enthusiasts.

The DOWN4SOUND D4S LTO 0 is engineered to provide reliable power to car audio systems handling between 3000W and 5000W.

This battery weighs only 4 pounds and measures a compact 7×4.75×3.

5 inches, making it one of the smallest yet most powerful lithium batteries for car audio.

Equipped with built-in cell balancing, it efficiently manages high-output alternators and maintains battery health over extended use. With 6Ah capacity and M6 terminal compatibility, it can work inline with regular 12V lead acid batteries, ensuring easy integration within existing systems.

Down4Sound’s battery delivers outstanding performance and durability without sacrificing portability. Its unique build quality and capacity to handle substantial loads make it a dependable choice for anyone upgrading their audio system.

Pros

• Advanced LTO lithium chemistry ensures maximum safety and longevity.
• Compact and lightweight design simplifies installation and saves space.
• Compatible with stock charging systems and lead acid batteries for easy integration.

Cons

• Limited availability and may require specialized retailers for purchase.

Reliable power delivery in a compact package makes the DOWN4SOUND D4S LTO 0 a standout choice for upgrading car audio power sources.

It balances safety with high performance, offering a smart solution for demanding audio systems that benefit from lightweight lithium technology.

2. XS Power XP750 XP Series 12V 750 Amp AGM Supplemental

Experience reliable power delivery with the XS Power XP750 XP Series 12V 750 Amp AGM Supplemental battery. Designed to boost your vehicle’s energy system, it offers exceptional durability and performance in a sealed, compact design.

Perfect for both boats and passenger cars, this battery supports demanding audio setups and electronic equipment without compromising safety or convenience.

The XS Power XP750 utilizes Absorbed Glass Mat (AGM) technology, suspending the electrolyte in fiberglass for spill-proof operation. Its valve-regulated design ensures it remains sealed and vibration resistant, even in rugged environments. This construction contributes to a longer lifespan and consistent power output under various conditions.

With a capacity of 22 amp-hours and a 12-volt rating, it delivers reliable supplemental power to enhance your car audio system’s performance. Low internal resistance allows it to provide high current bursts necessary for audio amplifiers and accessories.

The universal fit design and M6 terminals allow for flexible installation in nearly any position, making it convenient for different vehicle types. Both boat owners and passenger car drivers will find this model suits their needs, providing extra energy without the bulk or mess of traditional batteries.

Pros

• Spill-proof, sealed AGM design for safe and clean use
• Ultra-low internal resistance supports high current demands
• Universal fit with flexible mounting options and M6 terminals

Cons

• Capacity may not be sufficient for extremely high-power systems

The XS Power XP750 offers a balanced combination of durability, power, and flexibility. Its sealed design and robust construction make it suitable for enhancing vehicle audio setups while maintaining safety and ease of use. This battery is a strong candidate for anyone needing reliable supplemental power across multiple vehicle types.

This battery is a strong candidate for anyone needing reliable supplemental power across multiple vehicle types.

3. XS Power D3400 XS Series 12V 3,300 Amp AGM High

Experience reliable power with the XS Power D3400 XS Series 12V 3,300 Amp AGM High battery. Designed for demanding automotive audio and other high-performance use, it offers strong starting power and exceptional durability. Its rugged construction supports intense electrical loads efficiently.

This battery is engineered to meet the needs of vehicles requiring a consistent and powerful energy source. Featuring advanced Absorbed Glass Mat (AGM) technology, it ensures spill-proof operation and resistance to vibration. These qualities make it an ideal choice for boats, passenger cars, and various other applications.

These qualities make it an ideal choice for boats, passenger cars, and various other applications.

The battery delivers a robust 3,300 amps for peak power situations while maintaining low internal resistance. With a capacity of 80 amp-hours, it can handle extended energy demands effectively. The sealed, valve-regulated design provides safety and flexibility by allowing installation in nearly any position without leakage risks.

Its vibration resistance and spill-proof construction improve longevity and reliable performance over time. The M6 terminals provide secure connections that fit most configurations, making it a universally compatible option.

Users will appreciate the convenience and durability packed into a compact form factor.

Ideal for drivers seeking dependable energy in challenging conditions, this battery supports both daily driving and advanced audio systems. The balance of power, safety, and versatility makes it a standout choice among car audio batteries. Compared to traditional flooded batteries, it requires less maintenance and offers superior cycle life.

Pros

• Spill-proof and vibration-resistant design for durability
• Ultra-low internal resistance supports high power output
• Universal fit with M6 terminals for easy installation

Cons

• Relatively heavy compared to some competing models

With a combination of high power and robust construction, the XS Power D3400 battery proves to be a reliable and versatile choice for vehicles demanding superior electrical performance. Its spill-proof design and universal compatibility provide added convenience and security for users.

4. XS Power XP3000 XP Series 12V 3,000 Amp AGM Supplemental

Experience reliable and powerful energy supply with the XS Power XP3000 XP Series 12V 3,000 Amp AGM Supplemental battery. Designed to support high-demand car audio systems, it delivers consistent performance that keeps your sound system running at its best.

Its robust design offers durability for demanding conditions.

Whether you’re upgrading your vehicle’s audio or need extra power support, this battery ensures stability and efficiency. Its spill-proof, sealed construction adds safety and convenience for any installation setting.

The XS Power XP3000 offers a 12-volt capacity with an impressive 120 amp-hours rating, providing extended power availability for your audio setup. Built with Absorbed Glass Mat technology, the electrolyte remains suspended in fiberglass, making it spill-proof and vibration resistant. These features contribute to a safer, longer-lasting battery experience.

These features contribute to a safer, longer-lasting battery experience.

With an ultra-low internal resistance, it delivers rapid power bursts while maintaining excellent charge retention. This battery supports a runtime of approximately 240 minutes, ensuring your system runs smoothly over long periods.

Its valve-regulated structure enables installation in nearly any position, adding flexibility for various vehicle configurations.

The universal automotive fit means it suits most passenger cars without compatibility issues. Equipped with M6 terminals, connection setup is straightforward and secure. Ideal for drivers looking to enhance their car audio performance with reliable supplemental power.

Pros

• Spill-proof, sealed, and vibration-resistant design for safety and durability
• Ultra-low internal resistance supports efficient power delivery
• Versatile mounting options with valve-regulated battery structure

Cons

• Relatively heavy compared to standard car batteries, which may affect installation ease

Balancing durability and performance, the XS Power XP3000 is a dependable choice for powering demanding car audio systems. Its specialized construction and high capacity make it stand out among supplemental batteries, delivering consistent power and ease of use.

5. Big Jeff Audio Compact 22AH 12V Lithium LFP Battery 6000W

Experience the power and reliability of the Big Jeff Audio Compact 22AH 12V Lithium LFP Battery 6000W designed to enhance your car audio system’s performance. Its compact size and robust capabilities make it a smart choice for those seeking dependable energy on the road.

Engineered to meet high demands, this lithium battery supports extended playtimes and delivers consistent power. Its efficient design maximizes energy capacity while maintaining stability throughout use.

The Big Jeff Audio 22AH battery offers a solid maximum power output of 6000 watts, making it suitable for the most powerful car audio setups. With a total energy capacity of 293 Watt hours, you get long-lasting performance during extended listening sessions. This battery operates efficiently at a stable voltage of up to

This battery operates efficiently at a stable voltage of up to 7 volts, ensuring your system runs smoothly without interruptions.

Built-in cell balancing technology improves the battery’s lifespan by maintaining optimal charge levels across all cells. Its 22 Amp Hour rating provides reliable energy storage and steady output.

This product fits well in compact spaces, offering versatility for various car audio configurations.

Easy to install and maintain, the Big Jeff Audio battery is an excellent option for users seeking durable power solutions without compromising space or performance. It delivers solid value for those who prioritize consistent energy supply and device longevity. Ideally suited for car audio lovers demanding efficient, high-powered battery support.

Ideally suited for car audio lovers demanding efficient, high-powered battery support.

Pros

• High max power output of 6000 watts supports demanding audio systems
• Built-in cell balancing enhances battery life and performance
• Compact design with 22 Amp Hour capacity fits various setups

Cons

• Relatively limited stock availability may affect immediate purchase

The Big Jeff Audio Compact 22AH battery offers reliable and powerful performance tailored for car audio systems. Its advanced features ensure lasting energy delivery, making it a strong contender among automotive battery options.

6. XS Power S680 ‘S Series’ 12V 1,000 Amp AGM Automotive

Experience reliable power with the XS Power S680 ‘S Series’ 12V 1,000 Amp AGM Automotive Battery. Designed to deliver strong starting power, this battery stands out for its durability and performance. It’s engineered to meet the demands of passenger cars and provide consistent voltage output.

Built with absorbed glass mat (AGM) technology, it offers maintenance-free operation and excellent vibration resistance. The universal fit design means it works with a broad range of vehicles, making it a versatile choice for users seeking dependable energy supply.

The XS Power S680 battery features a robust 12-volt system with six cells, providing a steady and powerful flow of electricity. Its SAE terminal design facilitates easy installation across many passenger cars.

Customers benefit from its high cold-cranking amps capacity, which ensures reliable starting performance in various weather conditions. It boasts long-lasting build quality, reducing the need for frequent replacements.

Thanks to its maintenance-free nature, users can focus more on driving and less on battery upkeep.

Ideal for drivers looking to upgrade their existing battery, this model delivers a combination of performance and durability that meets everyday automotive demands. Its universal fit allows compatibility with many vehicles, making the battery a practical option for broad use without compatibility issues.

Pros

• High 1,000 Amp starting power for reliable engine ignition
• Maintenance-free AGM design with excellent vibration resistance
• Universal fit suitable for a wide range of passenger cars

Cons

• May not fit vehicles requiring specialized terminal configurations

The XS Power S680 battery offers well-rounded performance and durability for daily driving needs. Its universal compatibility and strong power output make it a reliable upgrade for many passenger vehicles seeking consistent starting power.

7. XS Power D1200 2600 Amp AGM Battery with M6 Terminal

Power your vehicle’s audio system with the XS Power D1200 AGM Battery, crafted to deliver impressive 2600 amps of starting power. Designed to meet high-performance demands, it supports reliable energy flow for all-terrain vehicles, snowmobiles, and utility vehicles alike.

Built for durability and consistent performance, this battery offers dependable power in various conditions. Its universal fit and rugged construction make it a versatile choice for anyone needing a strong and lasting battery solution.

Featuring a 12-volt capacity and 55 amp-hours rating, the XS Power D1200 ensures steady, long-lasting power delivery for your vehicle. The AGM (Absorbed Glass Mat) technology enhances resistance to vibration and leakage, extending battery life under tough conditions.

This battery comes equipped with M6 terminals for secure, easy connectivity. It’s designed to fit a wide range of vehicles, making installation straightforward without specialized tools.

With its compact yet powerful build, the D1200 supports demanding car audio setups and high-draw applications. Its maintenance-free design means it won’t require constant attention, adding convenience over traditional batteries.

Compared to standard lead-acid batteries, the XS Power D1200 provides faster recharge times and better cold-cranking performance. Users looking for a reliable power source for both everyday use and high-powered audio systems will find it an excellent choice.

Pros

• High 2600 amp cranking power for demanding audio systems
• AGM construction offers vibration resistance and leakage protection
• Universal fit with M6 terminals for straightforward installation

Cons

• Relatively heavy compared to smaller batteries

The XS Power D1200 delivers robust power and reliable performance for various vehicle types. Its durable design and user-friendly features make it a dependable choice for powering demanding car audio and vehicle systems without frequent maintenance.

8. OPTIMA® Batteries High Performance D75/25 YELLOWTOP® Sealed AGM Battery |

Experience powerful and reliable performance with the OPTIMA® Batteries High Performance D75/25 YELLOWTOP® Sealed AGM Battery. Designed specifically for demanding vehicle electrical systems, this battery excels in starting power and durability. Its sealed AGM construction offers maintenance-free convenience, making it an excellent choice for various automotive needs.

Its sealed AGM construction offers maintenance-free convenience, making it an excellent choice for various automotive needs.

Engineered with advanced SPIRALCELL TECHNOLOGY, it provides consistent and long-lasting energy delivery even in challenging weather conditions. Compact yet sturdy, this battery fits seamlessly into passenger cars requiring a dependable power source.

Expect superior vibration resistance and faster recharge times to keep your vehicle running smoothly.

Offering a 12-volt output with 620 cold cranking amps, this battery ensures your engine starts promptly every time. Measuring 9 5/16 x 6 13/16 x 7 5/8 tall, it fits vehicle-specific installations while weighing

Including dual SAE and GM terminals, connections are flexible and straightforward to handle.

The 48 AH C20 capacity supports sustained electrical loads, backed by a reserve capacity of 100 minutes for consistent performance during longer engine off periods. Compared to traditional flooded batteries, its spiral-wound pure lead plates deliver more power and resist vibrations up to fifteen times better. This quality extends overall battery life by three times, ideal for vehicles with high power demands.

Maintenance-free design eliminates the hassle of fluid checks or acid spills, adding convenience for daily use. Faster recharging capabilities reduce downtime, which benefits drivers facing cold climate starts or heavy electronic accessories. Suitable for passenger cars with a need for dependable power, it balances durability, performance, and ease of use exceptionally well.

Pros

• Superior vibration resistance for extended durability
• Sealed AGM design ensures maintenance-free operation
• Dual terminal options allow flexible installation

Cons

• Heavier weight compared to standard batteries may affect handling

The OPTIMA YellowTop battery offers a blend of power, longevity, and ease of use. Its robust features and reliable construction make it a strong contender for anyone needing a high-performance car battery able to endure tough conditions.

9. XS Power S925 ‘S Series’ 12V 2,000 Amp AGM Automotive

Experience reliable power with the XS Power S925 ‘S Series’ 12V 2,000 Amp AGM Automotive battery. Designed for vehicles that demand compact yet powerful battery solutions, this model offers superior starting power in a low-height form factor. Its versatile design fits in tight spaces, making it ideal for custom builds and space-limited setups.

Equipped to perform under rigorous conditions, this battery is tailored for race cars, street rods, and passenger vehicles, pairing robust capacity with convenience. The protective metal casing safeguards against harsh under-hood environments, enhancing durability and longevity.

The XS Power S925 is engineered to deliver 12 volts with a cranking amperage of 550, providing dependable starting power every time. Its low profile allows installation under seats or in compact trays where space is scarce. This battery can be directly mounted into GM group 34 and 78 applications when paired with the appropriate adapter kit, offering flexibility across vehicle types.

Constructed with advanced AGM technology, it features six sealed cells that resist leaks and maintenance needs. SAE post terminals facilitate straightforward and secure connections, improving both installation ease and safety. Additionally, the universal fit automotive design suits a broad range of cars and boats, improving compatibility and convenience for various users.

Ideal for those seeking a balance between power and size, this battery excels in environments demanding a tough, reliable energy source. Its sturdy metal case ensures protection against vibration and temperature extremes, making it a smart investment for demanding automotive and marine setups.

Through solid performance and adaptability, the S925 enhances vehicle reliability across applications.

Pros

• Compact size fits in limited space installations
• High 2,000 Amp cranking capability for strong starts
• Durable sealed AGM construction resists leaks and maintenance

Cons

• Requires adapter kit for some GM group applications

The XS Power S925 battery delivers impressive power and versatility in a compact package. It stands out for users needing reliable, maintenance-free starting power under challenging conditions.

Its blend of size, strength, and durability makes it a valuable choice in the competitive automotive battery market.

10. XS Power XP2000 AGM Battery 12V 80Ah 2000W Group 24

Experience powerful and reliable performance with the XS Power XP2000 AGM Battery. Designed to support high-demand car audio systems, it ensures your sound setup runs smoothly without interruptions.

Built to handle accessories like light bars, winches, and audio gear, this battery is a versatile solution for mobile power needs. The sealed design safeguards against spills and moisture, offering dependable operation in various environments. Elevate your vehicle’s electrical system with this trusted secondary battery.

The XS Power XP2000 AGM Battery delivers up to 2,000 watts, catering to demanding car audio systems and aftermarket electronics. Its Absorbent Glass Mat (AGM) technology provides steady energy, supporting devices such as power inverters and winches with safe, leak-free performance.

The sealed spill-resistant build enhances durability during rugged use, making it well-suited for cars, trucks, and off-road vehicles.

Measuring 2 inches in length, 54 inches in width, and

54 inches in width, and 46 inches in height, it fits standard Group 24 compartments for easy installation. Weighing 52 pounds, the battery includes M6 terminal hardware, simplifying wiring connections.

Rated at 80 amp-hours with a 150-minute reserve capacity, it offers substantial energy supply for extended use without frequent recharging.

This battery is ideal for users seeking a dependable secondary power source to support aftermarket audio and electronic accessories. Its combination of robust capacity, sealed construction, and universal fit offers excellent value.

Compared to similar batteries, it balances high output and build quality, making it suitable for a wide range of vehicle applications.

Pros

• High capacity output rated at 2,000 watts for demanding audio systems
• AGM technology ensures leak-free and maintenance-free operation
• Sealed spill-resistant design protects against moisture and rough conditions

Cons

• Heavier weight may require extra effort during installation

Overall, the XS Power XP2000 AGM Battery stands out for its reliable performance and durable design. It meets the power demands of advanced car audio and electronic systems, making it a strong choice for those needing a secondary battery.

Top Picks for the Best Car Audio Battery in 2024

Charging and maintenance requirements

When choosing the best car audio battery, paying attention to charging and maintenance requirements helps extend the battery’s lifespan and guarantees reliable performance. Recharge time and efficiency vary among different battery types; batteries that recharge quickly allow for shorter downtime and more consistent power delivery to your audio system.

Some batteries come maintenance-free, offering convenience by eliminating the need for regular checks or refills, while maintenance-required options may need periodic topping up of electrolyte levels and cleaning to prevent corrosion. Batteries equipped with indicators or monitoring features make it easier to keep an eye on charge status and overall health, helping prevent unexpected failures and improving overall usability. Balancing efficiency, ease of care, and monitoring capabilities will lead to a better experience and longer-lasting enjoyment of your car’s sound system.

Capacity and performance

When selecting a battery designed specifically for powering car audio systems, focusing on amp hours rating is key since it indicates how long a battery can supply power without needing a recharge. Cold cranking amps reveal how well the battery can deliver high bursts of current to start equipment even in low temperatures, which is particularly beneficial if you live in colder regions or use your system frequently.

The reserve capacity measures how long the battery can continue to run essential components if the vehicle’s alternator fails, providing peace of mind during extended use or power outages. This combination of ratings helps in choosing a battery that not only meets the power demands of various audio setups but also ensures reliability and longevity during performance. When shopping, checking these specifications alongside compatibility with your audio system’s power needs will lead to a satisfying and uninterrupted listening experience.

Price and value for money

When selecting a battery for a car audio system, the price often varies across different brands and types, with some offering a higher upfront cost but potentially better performance and durability. Considering the long-term cost and lifespan helps balance initial expenses against how long the battery will last before needing replacement, which can save money over time. Customer reviews and satisfaction ratings provide valuable insights into real-world experiences, highlighting reliability, capacity, and compatibility with various audio setups.

Customer reviews and satisfaction ratings provide valuable insights into real-world experiences, highlighting reliability, capacity, and compatibility with various audio setups. Paying attention to these factors allows for a well-informed decision that suits both budget and the specific demands of your audio equipment.

Durability and build quality

When selecting a car audio battery, paying attention to how it withstands vibration and impact plays a key role in its longevity and consistent performance. Batteries designed to resist shaking and bumps perform better during daily driving or off-road conditions, reducing the risk of internal damage.

Features that protect against water damage and corrosion also contribute significantly to maintaining the battery’s efficiency, especially in humid or wet environments. Choosing a product with these protective elements can help prevent premature failure caused by exposure to moisture or rust. Additionally, seeking out batteries that come with reliable manufacturer warranties and responsive customer support provides peace of mind, as it indicates a commitment to quality and assistance in case any issues arise.

This combination of robust construction, protective features, and dependable backing creates a battery that can reliably power your car audio system over time without frequent replacements.

Battery type and compatibility

Choosing the right power source for your car audio setup involves understanding the different types available such as lead acid, AGM, and lithium ion batteries. Lead acid batteries tend to be heavier but are widely used due to their affordability and reliability in standard car audio systems.

Lithium ion options are lighter and provide longer life spans along with higher energy density, though they usually come at a premium price. Compatibility with your car audio system plays a significant role since some advanced head units and amplifiers demand stable and clean power, which certain battery types can supply better than others.

Additionally, paying attention to the size and form factor is essential to ensure the battery fits within the available space in your vehicle and integrates well without requiring major modifications. Evaluating these aspects will help in selecting a power source that complements both the performance requirements and physical constraints of your car audio system.

Safety and installation

When choosing the best car audio battery, paying attention to safety certifications and standards is a smart step to avoid electrical issues and ensure reliable performance. Batteries that meet recognized safety benchmarks provide peace of mind and help maintain the integrity of your vehicle’s electrical system. Following proper installation guidelines will make a significant difference in how well the battery functions and its longevity.

This includes securely fastening the battery, using the correct terminal connections, and avoiding exposure to extreme heat or moisture. Compatibility with existing car electrical systems is another key aspect, as using a battery designed to match the voltage and power requirements of your audio setup prevents strain on the vehicle’s alternator and wiring.

Carefully checking these factors can help create a safer and more efficient audio experience without unexpected interruptions or damage to your car’s electronics.

People Also Asked

How Do I Properly Maintain A Car Audio Battery To Ensure Longevity?

To properly maintain a car audio battery and ensure longevity, regularly check and clean the terminals to prevent corrosion, and keep the battery fully charged by avoiding prolonged periods of inactivity. Additionally, use a battery maintainer or trickle charger if the vehicle is not used frequently.

What Features Should I Look For In The Best Car Audio Battery?

Look for a car audio battery with high cold cranking amps (CCA) for reliable starting power and a deep cycle rating to support prolonged audio system use. Additionally, choose one with durable construction, good vibration resistance, and a maintenance-free design for long-lasting performance.

Which Brands Are Known For Producing The Best Car Audio Batteries?

Brands like Optima, Odyssey, and XS Power are known for producing some of the best car audio batteries, offering high performance and durability. These brands are favored by audiophiles for their strong power output and reliable starting ability.

How Does A Specialized Car Audio Battery Improve Sound System Performance?

A specialized car audio battery provides consistent and stable power delivery, preventing voltage drops during high-demand audio playback. This ensures cleaner sound output and minimizes distortion for improved overall sound system performance.

What Is The Difference Between A Regular Car Battery And A Car Audio Battery?

A regular car battery is designed to provide short bursts of high current to start the engine, while a car audio battery is built to deliver steady, continuous power to support high-demand audio systems. Car audio batteries typically have thicker plates and higher reserve capacity to handle prolonged electrical loads.

Conclusion

Choosing the best car audio battery often comes down to balancing power capacity, durability, and price. While high-capacity batteries provide consistent performance and longer playtime for demanding sound systems, they may require a higher upfront investment and occasionally more maintenance.

The best car audio battery suits those who prioritize reliable energy supply to their audio setup without frequent replacements or unexpected power drops. Understanding your system’s power needs and usage habits can help alleviate concerns about compatibility and lifespan.

Overall, selecting the right battery ensures enhanced sound quality and uninterrupted listening experiences, making it a practical choice for anyone seeking lasting, dependable car audio power.