KeyLine Chargers

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When purchasing a product, price is the consumer's primary concern. At present, KeyLine Chargers has 9 products for sale. KeyLine Chargers products range in price from $15.87 to $142.87, and the average price of all the products is about $74.13.

You can confidently purchase KeyLine Chargers products from the seller LJ Distribution LLC. The brand holds an average rating of 4.6, testifying to its excellent reputation.

KeyLine Chargers Best Sellers

Last Updated: Jan 9, 2026

Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup

Battery Relocation Kits

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Advanced Dual Battery Isolator 12V Kit – Designed for superior performance, this dual battery kit ensures efficient power distribution between two batteries without voltage drops. Unlike traditional battery isolator diodes, this automatic disconnect switch eliminates power loss while maintaining a seamless connection between your primary and auxiliary power sources. Compact at 2.6” x 2.6” x 2”, it's perfect for under-hood installations or as part of a battery relocation kit.

Smart Voltage Sensitive Relay (VSR) for Optimal Charging – Featuring a 12V dual battery wiring kit, this system automatically activates at 13.3V and disengages at 12.8V, ensuring your starting battery remains fully charged. Whether you're installing a marine dual battery kit for your boat, a dual battery kit for truck applications, or need a battery isolator 12V kit for off-grid power, this setup prevents battery drain and guarantees reliable performance.

Built for Extreme Conditions & Rugged Durability – Engineered for off-road adventures, marine use, and daily driving, this dual battery isolator kit is IP65-rated for water, dust, and vibration resistance. Its solid-state design ensures durability, making it an excellent choice for automotive, RV, UTV, and marine battery isolator needs. Whether battling tough trails or navigating open waters, count on this dual battery wiring kit to provide uninterrupted power.

Complete Dual Battery Wiring Kit for Easy DIY Installation – No complicated setup required! This battery isolator kit includes (1) 140 Amp voltage sensitive relay, (1) 20-ft red power cable, (1) 2-ft black ground cable, (2) positive marine-type brass battery terminals, (1) negative brass terminal, tinned copper lugs, heat shrink tubing, cable ties, and step-by-step instructions. Perfect for DIYers of all skill levels—just connect the power wire in, power wire out, and you're ready to go!

Trusted Performance with Warranty & Money-Back Guarantee – Every dual battery kit by KeyLine Chargers is backed by a 12-month industry-leading warranty. If you're not 100% satisfied with your purchase, take advantage of our 30-day money-back guarantee—no questions asked! Drive with confidence knowing you have a premium battery isolator 12V kit keeping your power system running at full capacity.

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Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine

Battery Relocation Kits

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EASY-TO-USE: The 140 Amp Dual Battery Smart Isolator comes with mounting plate and hardware. Does not include installation wires. Easy-to-follow directions for the most novice DIYer. What could be easier? **If you need installation wiring, see Dual Battery Kit or ATV/UTV Kit.

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Dual Battery Isolator Heavy Duty 300 AMP 1000 AMP Peak Voltage Sensitive Relay VSR for 12 Volt Systems - Works with All Batteries Types Including Lithium and LiFePO4

Battery Relocation Kits

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Do you have more than 150 amp hour capacity of auxiliary battery? Do you need even MORE power and amperage for your additional accessories or inverters? When our standard 140 amp isolator isn't enough, you need the Heavy Duty Keyline 300 amp isolator. Key line Chargers has the ONLY 300-amp Dual Battery Isolator on the market! Our 300-amp Dual Battery Isolator is the BEST charging solution for high capacity dual battery systems.

Forget the traditional diode relays and so-called “solid state” devices that can rob you of almost 2 amps of output power! The Keyline Dual Battery Isolator is the only unit designed with cutting edge programming to deliver optimum performance – with ZERO sacrifice. The Keyline Chargers Pro HD Dual Battery Isolator is a Voltage Sensitive Relay (VSR) that cuts in at 13.3 volts and cuts out at 12.8 volts to ensure your start battery is always charged.

Unlike other isolators on the market, the Keyline Pro HD Automatic 300 Amp Dual Battery Isolator is IP65 Certified. This international Protection rating means that your Keyline isolator is safe for use even for your off-road needs in dusty, wet, and unexpected extreme weather environments. This compact battery isolator was built ultra-small to fit almost anywhere! A perfect fit under the hood or anywhere to get close to your batteries.

We made this High Amperage isolator for the person who wants to select their own wire and installation accessories. This is only the isolator by itself with the mounting screws and connecting post nuts and bolts. This battery isolator does not come with any other installation accessories, if you need wire and terminals, etc... then please consider our 300 amp dual battery complete kit.

Every Keyline Chargers Professional Grade, Heavy Duty 300 Amp Dual Battery Isolator is backed by an industry leading 3-year warranty. If you are not 100% satisfied with your purchase, simply take advantage of the No Questions Asked, 30-Day Money Back Guarantee!

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1/0 Gauge Wire (25ft) AWG Amp Battery Cable for Automotive Electrical Wiring - Oxygen Free Copper (OFC) Welding Cable 0GA - Car Amplifier Power & Ground Cable, Stereo Audio Speakers, RV Trailer Wiring

Car Amplifier Power & Ground Cable

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Heavy-Duty 1/0 Gauge Wire: Our 1/0 AWG copper wire ensures superior conductivity and minimal voltage drop, perfect for car battery wire, amplifiers, and marine applications.

High-Quality OFC Construction: Crafted with oxygen-free copper (OFC 0 gauge wire quality) for reliable power transfer, making it ideal for battery cables 1/0 gauge and welding cable needs.

Versatile Applications: This 1/0 awg battery cable is suitable for automotive wiring, RVs, trailers, and even 4 gauge welding cable uses, offering flexibility for various electrical projects.

Durable and Safe: Our 1/0 gauge amp wire is rated for high performance and safety, making it the go-to 4 awg copper wire for car battery wire and marine environments.

Flexible and Easy to Install: The 0ga wire is designed for easy handling and installation, providing the strength of 4/0 welding cable with the flexibility needed for automotive and battery cable wire projects.

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8 Gauge Wire (25ft) AWG Amp Battery Cable for Automotive Electrical Wiring - Oxygen Free Copper (OFC) Welding Cable 8GA - Car Amplifier Power & Ground Cable, Stereo Audio Speakers, RV Trailer Wiring

Car Amplifier Power & Ground Cable

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Heavy-Duty 8 Gauge Wire: Our 8 AWG copper wire ensures superior conductivity and minimal voltage drop, perfect for car battery wire, amplifiers, and marine applications.

High-Quality OFC Construction: Crafted with oxygen-free copper (OFC 8 gauge wire quality) for reliable power transfer, making it ideal for battery cables 8 gauge and welding cable needs.

Versatile Applications: This 8 awg battery cable is suitable for automotive wiring, RVs, trailers, and even 4 gauge welding cable uses, offering flexibility for various electrical projects.

Durable and Safe: Our 8 gauge amp wire is rated for high performance and safety, making it the go-to 8 awg copper wire for car battery wire and marine environments.

Flexible and Easy to Install: The 8ga wire is designed for easy handling and installation, providing the strength of 8 welding cable with the flexibility needed for automotive and battery cable wire projects.

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1/0 Gauge Amp Wire - 25ft Red | Best Used for Battery Cable, Marine Speaker Wiring, Solar Systems for RV Trailer, Car Audio Speaker, 8 AWG Automotive Copper Clad Aluminum (CCA)

Car Amplifier Power & Ground Cable

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1/0 GAUGE 25-FEET RED CCA POWER GROUND WIRE: This top-quality, true 1/0 gauge (AWG) power ground wire is essential for ensuring optimal power transfer in your wiring projects. Remember, a lower gauge number means a thicker cable, reducing resistance to current flow.

1/0 GAUGE CCA WIRE - COPPER CLAD ALUMINUM: Our primary cable wire is crafted from copper clad Aluminum (CCA), offering an economical and highly efficient conductor of power. CCA is ideal for applications requiring ample power transfer, such as car audio and marine speaker wire installations.

EASY POLARITY IDENTIFICATION: Simplify your installation process with our color-coded Speaker Cable or Battery Cable. Accurate polarity is crucial to prevent potential damage to your audio equipment.

WIDE COMPATIBILITY: This versatile cable, also known as speaker wire, battery cable, and car speaker wire, is engineered for up to 300 volts. With various gauge options, including 1/0 AWG copper Clad wire, this cable is suitable for an array of applications, from car audio to marine speaker wire installations

POWER / GROUND WIRE SET: Our 1/0 AWG battery cable is an excellent choice for car amplifiers, subwoofers, and electric wire installations. It's equally suitable for various applications like indoor lighting, automotive systems, car speakers, and more. Additionally, we offer 14, 12, 8, 4, 1/0 gauge OFC and CCA wire to cater to your specific needs.

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12 Gauge Speaker Wire - 100 Feet Black| 12-2 AWG - CL3 CL2 Rated for Marine Wiring, Outdoor in Ground Burial & in Wall / 2 Conductors - OFC Oxygen-Free Copper, Black 100ft

Speaker Cables

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12 GAUGE 100-FEET OFC SPEAKER WIRE: This top-quality, true 12-2 gauge (AWG) OFC Oxygen Free Copper Speaker Wire Cable is built with 180 high-count stranded premium sound quality for home theater, car audio systems and even for trailer wire.

OUTDOOR DIRECT BURIAL WIRE AND IN-WALL CL3 RATED: Upgrade your outdoor audio installations with our 12/2 Low Voltage Landscape Wire, ideal for direct burial to ensure top-quality sound for your outdoor speaker runs. This UL CL3-rated speaker wire is designed for burying underground and in-wall installations, meeting the highest safety standards. Elevate your outdoor audio experience with this dependable and versatile speaker wire.

12 GAUGE OFC WIRE 2 CONDUCTOR - OXYGEN FREE COPPER: Our primary cable wire is crafted from Oxygen Free Copper (OFC), offering an economical and highly efficient conductor of power. OFC is ideal for applications requiring ample power transfer, such as car audio and marine speaker wire installations.

WIDE COMPATIBILITY & HIGHEST QUALITY MATERIAL: This versatile wire is perfect for stage wiring, speaker connections, power amp installations, and car speaker setups. With various gauge options, including 12 AWG copper wire, this cable is suitable for an array of applications, from car audio to marine speaker wire installations.

POWER / GROUND WIRE SET: Our 12 AWG copper wire is an excellent choice for car amplifiers, subwoofers, and electrical installations. It's equally suitable for various applications like indoor lighting, automotive systems, car speakers, and more. Additionally, we offer 12, 8, 4, and 1/0 gauge OFC wire to cater to your specific needs.

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8 Gauge Amp Wire - 25ft Black | Best Used for Battery Cable, Marine Speaker Wiring, Solar Systems for RV Trailer, Car Audio Speaker, 8 AWG Automotive Copper Clad Aluminum (CCA)

Car Amplifier Power & Ground Cable

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8 GAUGE 25-FEET BLACK CCA POWER GROUND WIRE: This top-quality, true 8 gauge (AWG) power ground wire is essential for ensuring optimal power transfer in your wiring projects. Remember, a lower gauge number means a thicker cable, reducing resistance to current flow.

8 GAUGE CCA WIRE - COPPER CLAD ALUMINUM: Our primary cable wire is crafted from copper clad Aluminum (CCA), offering an economical and highly efficient conductor of power. CCA is ideal for applications requiring ample power transfer, such as car audio and marine speaker wire installations.

EASY POLARITY IDENTIFICATION: Simplify your installation process with our color-coded Speaker Cable or Battery Cable. Accurate polarity is crucial to prevent potential damage to your audio equipment.

POWER / GROUND WIRE SET: Our 8 AWG battery cable is an excellent choice for car amplifiers, subwoofers, and electric wire installations. It's equally suitable for various applications like indoor lighting, automotive systems, car speakers, and more. Additionally, we offer 14, 12, 8, 4, 1/0 gauge OFC and CCA wire to cater to your specific needs.

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12 Gauge Speaker Wire - 100 Feet Black | 12-2 AWG Gauge - Rated for Marine & Outdoor in Ground Burial & in Wall CL3 CL2, 2 Conductors - CCA Copper Clad Aluminum, Black 100ft

Speaker Cables

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12 GAUGE 100-FEET CCA SPEAKER WIRE: This top-quality, true 12-2 gauge (AWG) CCA Copper Clad Aluminum Speaker Wire Cable is built with 180 high-count stranded premium sound quality for home theater, car audio systems and even for trailer wire.

12 GAUGE CCA WIRE 2 CONDUCTOR - COPPER CLAD ALUMINUM: Our primary cable wire is crafted from Copper Clad Aluminum (CCA), offering an economical and highly efficient conductor of power. CCA is ideal for applications, such as car audio and marine speaker wire installations.

POWER / GROUND WIRE SET: Our 12 AWG copper clad Aluminum wire is an excellent choice for car amplifiers, subwoofers, and electrical installations. It's equally suitable for various applications like indoor lighting, automotive systems, car speakers, and more. Additionally, we offer 14, 12, 8, 4, and 1/0 gauge CCA wire to cater to your specific needs.

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KeyLine Chargers FAQs

Is KeyLine Chargers Legit?

Yes, KeyLine Chargers is a legitmate brand on Amazon. After conducting a comprehensive analysis of 1,598 customer reviews for KeyLine Chargers products on Amazon, we have determined its average rating. With a strong performance and good quality, KeyLine Chargers has received an average rating of 4.6 from numerous buyers, indicating that KeyLine Chargers are trustworthy and live up to their claims. Therefore, it is safe to make purchases from KeyLine Chargers on Amazon.

Amazon has strict policies and safety measures in place that ensure only legitimate sellers and products are allowed on their platform. It also provides a secure payment gateway and offers buyer protection, ensuring your transaction is safe. In the unlikely event that there's an issue with your purchase, Amazon's customer service and return policies are designed to protect your interests.

How to find more KeyLine Chargers products?

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Select the products you want in the KeyLine Chargers buying guide, and take a glance at the prices and features of the products.
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How does findthisbest choose the top KeyLine Chargers products?

We analyze millions of KeyLine Chargers products reviews and customer reviews to recommend the best picks for most consumers. We have a professional team with decades of experience to test the products, which can help ensure that we provide our readers with accurate advice and best recommendations.

How can I purchase KeyLine Chargers products via FindThisBest?

Go to the KeyLine Chargers page.
Select the product you want in the KeyLine Chargers buying guide, and then view the product on Amazon. For example, if you are interested in the top 1 product Dual Battery Isolator Kit 12V - 140 Amp Voltage Se..., you can view it on Amazon page.
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