Best Battery Relocation Kits in 2026

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 ATV/UTV Isolator is the only SMART unit designed with cutting edge programming to deliver optimum performance - with ZERO sacrifice. This compact battery isolator was built ultra-small (2.6" x 2.6" x 2") to fit almost anywhere! A perfect fit under the hood or in your offroad rig to get close to your dual battery setup.

VOLTAGE SENSITIVE RELAY: The KeyLine Automatic 140 Amp Dual Battery Isolator is all you need to charge Two Battery Systems in your ATV/UTV vehicle. Voltage Sensitive Relay (VSR) cuts in at 13.3 volts and cuts out at 12.8 volts to ensure your primary battery is always charged and ready to start your vehicle. It's like having two separate power sources for each battery while only having one alternator!

RUGGED DURABILITY: Unlike other chargers on the market today, the KeyLine Automatic 140 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.

DUAL BATTERY ISOLATOR 12V KIT – Measuring only 2.6" x 2.6" x 2", it's the perfect dual batteries isolation kit for under the hood or Battery Relocation Kit. Say goodbye to power-robbing traditional battery isolator diodes, solenoids, or battery disconnect switch 12v with our Battery Isolator 12V that delivers optimal performance without sacrificing power.

DUAL BATTERY KIT by Keyline Charger is a Voltage Sensitive Relay that charges two battery systems. It ensures that the primary battery is always charged and ready to start the vehicle by cutting in at 13.3 volts and cutting out at 12.8 volts. It's like having two power sources with only one alternator.

RUGGED DURABILITY: The ideal choice for those who require a reliable marine battery isolator or a dual battery smart isolator for their car audio battery charger needs. The KeyLine Automatic 140 Amp Dual Battery Isolator is a durable product that can withstand extreme weather conditions and vibrations. Its IP65 certification guarantees its safety for off-road use, even in dusty and wet environments.

Heavy-duty group U1 battery box for 12-volt lawn and garden, tractor and mobility batteries.

Features patented locking tabs to fasten the lid to the base securely and reinforced handles to prevent cracking during relocation

Built for rugged environments with an impact resistance down to minus 20-degrees Fahrenheit, and unaffected by acid, gas, oil, as well as, UV exposure

12V, 140A, 13.3V cut-in voltage, 12.8V cut-out voltage,; Package Include All the Bits and Pieces Needed for a Complete Installation

Working Voltage: Having Voltage Sensitive Chip,Rely Cuts in at 13.3 Volts and Cuts out at 12.8 Volts to Ensuring Primary Battery is Always Ready for Vehicle to Run.

Fuction:Like Having Two Separate Power Sources,The Dual Battery Isolator Kit Enables Your Accessories to Run From a Separate Battery While the engine is not running on your vehicle While keeping your Main Battery Charged and Your Vehicle Always Ready to Go and Start When You Want It.

REAL 1/0 American wire gauge

12 Feet red / 3 Feet black

LIFE TIME WARRANTY

MADE IN USA,LIFE TIME WARRANTY

MADE IN USA ,REAL 4 AWG

REAL 1/0 AMERICAN WIRE GAUGE

Fit type: Universal

Part number: PK15301RB

Easy to Install: No alternator or ignition connection needed,You don't need any additional components to complete installation as everything is included in the kit, including leads, connectors, screws, zip ties, and more.

Purpose: This voltage sensitive relay is design for two battery systems (suitable for Acid-Lead batteries and Lithium batteries. Not suitable for Ternary polymer lithium battery), allow to having two separate power sources while charging by one alternator, it's all need to charge and isolate two battery systems.

Rugged Durability: This dual battery isolator is all you need to charge a dual battery system. It features a voltage sensitive chip ensuring your primary battery is always ready for your vehicle to run. This dual battery isolator is also built to withstand extreme weather environments, vibration and is water resistant.

REAL 2 GAUGE, MADE IN USA

PREMIUM 1/0 REAL GAUGE MADE IN USA

【Practical】Suitable for side installation. Universally suitable for most batteries, convenient and practical, professionally manufactured, stable in performance, and can be used with confidence. for battery carrier

【Practical】Suitable for side installation. Universally suitable for most batteries, convenient and practical, professionally manufactured, stable in performance, and can be used with confidence. for battery carrier

【Practical】Super high-quality battery holder specially designed to upgrade larger size batteries, professionally manufactured, with stable performance, you can use it with confidence.

Abrasion Resistance: This set is made of great aluminum alloy material, abrasion resistance, corrosion resistance, durability, long service life.

Effective Fixed: The electric adjustment bracket effectively fixes the electric adjustment, and ensures that the electric adjustment Angle is completely controlled, so that the remote control vehicle can steer smoothly.

Fine Workmanship: Battery tray has the fine workmanship, improve the overall performance, effectively defend the battery and prolong its service life.

【Compatibility】 100% Brand new and high quality Grip Battery Carrier. Super high quality battery carrier designed for lifting battery of larger size.

【High Quality Material】 Made of high quality metal and acid-resistant vinyl belt, sturd and durable for long time use.

【Reasonable Design】 Suitable for side installation. With this you can carry battery safely. Universal fits most of batteries.

WEATHER RESISTANT: Smart battery isolator can work in dusty, humid and unexpected extreme weather conditions

MAIN FUNCTION: Enables your accessories to run on a separate battery when the engine is not operating on the vehicle, while keeping the main battery charged and your vehicle always ready for work

SUITABLE VEHICLES: This product can be installed on most vehicles, such as trucks, SUVs, RVS, ATVs, UTVs, boats, etc.