Top 9 Dual Battery Isolator Kit – Automotive Replacement Battery Relocation Kits

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1. KeyLine Chargers


ATV, Voltage Sensitive Relay VSR Automatic Battery Disconnect Switch 12V | Cars, Marine Battery Isolator by KeyLine Chargers, UTV, Dual Battery Isolator Kit 140Amp, Boat Battery Isolator 12v Kit, RV

KeyLine Chargers #ad - Easy-to-follow directions for the most novice DIYer. 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. 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.

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. It's like having two power sources with only one alternator. What you get: 1 140 amp voltage sensitive relay vsr; 1 20 ft red battery cable; 1 2ft black ground battery cable; 2 positive brass marine type battery terminals; 1 negative brass marine type battery terminal; tinned copper lugs & heat shrink; cable ties; easy-to-follow instructions.

The keyline automatic 140 amp Dual Battery Isolator is a durable product that can withstand extreme weather conditions and vibrations. 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. What could be easier? Its ip65 certification guarantees its safety for off-road use, even in dusty and wet environments.
BrandKeyLine Chargers #ad
ManufacturerKeyLine Chargers #ad
Height2.6 Inches
Length2 Inches
Weight0.5 Pounds
Width2.6 Inches
Part NumberIso-Pro140DBK
Warranty12 Months



Dual Battery Isolator Kit 12 Volt 140 Amp Voltage Sensitive Relay Complete VSR Double Battery Automatic Charger

RANSOTO #ad - Function: cause your accessories to run from a separate battery while the engine is not working on your vehicle, and at the mean time holding your main battery charged and your vehicle always ready to work.

It can work in dusty, wet and unexpected extreme weather condition. This item can install to most of vehicle, ATV, RV, SUV, UTV, for example Truck, Boat and so on. This package is including 12 volt 140 Amp Voltage Sensitive Relay Isolator and includes all other accessrioes. It is including instruction. Warranty : we provide 6-month warranty, If you have any questions, You can contact us and we will reply you within 24 hours.
BrandRANSOTO #ad
ManufacturerANODIZING RACING #ad
Height3.15 Inches
Length12.4 Inches
Width8.66 Inches
Part NumberRZ084

3. True Amalgamated


TRUE® UTV-SBI-CM UTV Dual Battery Connect & Monitor Kit

True Amalgamated #ad - 1 ea- trueinch sealed 6ga Red and Black Cables with 6mm lugs. 1- 36mm blue led volt meter with dual rdisplay requires29mm mounting hole, inludesx 18ga duplex wire with connectors. Returns authorizedamazon will notaccepted. 1- true utv-sbi-18 isolator with silicon insulators andDual Lock fastner.
BrandTrue Amalgamated #ad
Part NumberUTV-SBI-CM

4. Ampper


Ampper 12V 140Amp Dual Battery Isolator, RV, Vehicle, ATV, Battery Voltage Sensitive Relay VSR Smart Battery Isolator for Car, UTV and Boat

Ampper #ad - Easy to use: this vsr comes with mounting plate and 4 bolts for install. Purpose: this voltage sensitive relay is design for two battery systems SUITABLE for Acid-Lead batteries, allow to having two separate power sources while charging by one alternator, NOT SUITABLE for Lithium batteries, it's all need to charge and isolate two battery systems.

Heavy duty: this voltage sensitive relay is heavy built to suitable for almost anywhere even off-road, shock resistant, which is water resistant, dust proof and withstand unexpected extreme weather environments. Compatible: used for dc 12 v two battery systems isolate and charge, UTV and boat, RV, ATV, universal used for car, vehicle, also two battery electrical equipment.1

100% satisfaction: no reason for return or change. Ensure your primary battery is always charged and ready to start your engine, the secondary will be charged after the primary battery's volts exceed 13. 3 volts. Primary battery protected: cuts in at 13. 3 volts and cuts out at 12. 8 volts.
BrandAmpper #ad
ManufacturerAmpper #ad
Height2.6 Inches
Length2.76 Inches
Weight8 ounces
Width3.74 Inches
Part NumberAm-VSR0101

5. MaySpare


MaySpare Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay VSR Double Battery Automatic Charger & Wiring Cable Kit

MaySpare #ad - 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.

Lifetime warranty :100% high Quality and Enjoy Full Life Warranty, Free Exchange. 12v, 13. 3v cut-in voltage, 12. 8v cut-out voltage, 140a, ; package Include All the Bits and Pieces Needed for a Complete Installation. Compatibility: this battery isolators are small and suitable for almost anywhere, truck, RV's,marine vehicle, for ATV, Boats, UTV, caravan. 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.
BrandMaySpare #ad
ManufacturerMaySpare #ad
Part NumberUS-Battery kit



VSR, Voltage Sensitive Relay, RVs, UTV, Campers 5th Wheels Off Road Vehicles Rhino 12V Isolator, Boats, 12V 140 Amp Specially Designed for ATV, Dual Battery Smart Isolator DEWINNER

DEWINNER #ad - Fits a wide variety of vehicles -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.

Voltage sensitive relay: dewinner automatic 140 amp dual battery isolator is all you need to charge two battery systems. 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. If you want additional components to complete installation, please click "DEWINNER dual battery isolator kit". What you get: singleisolator: 140 Amp Smart Battery Isolator; Easy-to-follow directions for the novice DIYer.

Suitable for 12v 4wd, marine, truck, caravan & camping applications. Buy with confidence: every 140 amp dual battery isolator is backed by an industry leading 12-month warranty. If you are not 100% satisfied with your purchase, simply take advantage of the No Questions Asked, 30-Day Money Back Guarantee!! Easy to install: no alternator or ignition connection needed. It's like having two separate power sources for each battery while only having one alternator! Only suitable for lead-acid batteries versus lead-acid batteries.
ManufacturerDEWINNER #ad
Part NumberDE-C002



Dual Battery Isolator Kit 250 Amp Universal 12V/24V Voltage Sensitive Relay VSR Smart Battery Isolator for Marine Car Truck RV ATV

GMURA #ad - Smart battery isolator: the dual battery isolator ensures that the main battery is always charged and ready to start the vehicle. Automatically connection voltage : 13. 5v-16v12v working voltage; 27v-32V 24V working voltage. Wide range of applications: the battery isolator kit has a small design, ATVs, off-road vehicles, vans, boats, and is compatible with a variety of vehicles, UTVs, does not take up space, such as 12V/24V trucks, RVs, and campers.

Lcd display: real time monitoring of 2 batteries voltage. There is a 5 second delay when connecting or disconnecting automatically. This product has 4 fixing holes for easy installation. It's like your vehicle has two separate power sources for each battery while only having one alternator. Unrestrained start engine: current: 250 amps; voltage: 12/24v universal.

The battery isolator will disconnect immediately if it is below 12. 5 v. Applicable to lithium batteries: the dual battery isolator adds a lithium battery connection cable, so it can be applied to vehicles with lithium batteries to maintain the stable performance of the car battery. After installing this smart battery isolator, there is no need to worry that the engine cannot be started when the battery is dead, just press the emergency button and turn on the auxiliary battery to start quickly.
BrandGMURA #ad
ManufacturerGMURA #ad
Part NumberDual Battery Isolator Kit

8. Wztepeng


12V 140A Dual Battery Isolator with Wiring Cable Kit -VSR Voltage Sensitive Relay Compatible with SUV Boat ATV UTV RV Truck-Double Battery Automatic Charger

Wztepeng #ad - This product is designed for dual battery systems, suit for Most 12V Charging systems. Surge protection, Automatically sensing voltage level of main battery. We offer a 1-year warranty, if you are not satisfied with your purchase, 100% satisfaction guarantee.

Constructed with a weatherproof body IP65 and durable silver tipped contacts. Package include:1x 24” length red cable with single connector丨1x12” length red cable with two connector丨1x12” length black Cable with two connector丨2x SC16-8 Lugs丨1x blue insulated ring terminal丨2x orange heat shrink cover丨3x nut, 2x washer, 4x screws. The dual battery Isolator can charge 2 Battery systems. Voltage sensitive relay:voltage sensitive relay:cut in volt 13vdC, Cut out volt 12. 8vdc. Ensure main battery is always charged and ready to run the vehicle. 2 year warranty:for any reason, contact us directly.
BrandWztepeng #ad
ManufacturerWztepeng #ad
Part NumberRZ263-0



Battery Isolator Kit 12V 140AMP Dual Battery Smart Isolator Manual/Auto Modes with Voltmeter for Vans Truck ATV UTV RV Boat-22FT Wiring Cable 3PCS Battery Terminals Included

FUBOCH #ad - Safe&efficient: the dual battery isolator efficiently manages and protects power, preventing over-discharge of the main battery and ensuring full charging of the second battery. Smart battery isolatorfuboch battery isolator has a built-in voltmeter to display the voltage and supports manual automatic switching, so you can monitor the voltage at any time and switch modes as needed.

Upgrade to a dual battery system and power multiple devices with ease using the battery isolator kit. It includes all the necessary accessories for a quick installation. Easy installationthe fuboch dual battery isolator kit is easy to install in cars, RVs, trucks, boats, and so on. Never be strandedthe dual battery isolator is connected to both the vehicle's primary and secondary batteries. Quality guaranteethis 12v dual battery isolator kit comes with a 12-month warranty and a 30-day money-back guarantee, providing reliable and efficient performance for your vehicle or boat, and allowing you to purchase with confidence.

With high-quality materials and an IP68 waterproof, dustproof, and vibration-proof construction, our battery isolator delivers reliable performance even in harsh environments. When the vehicle's primary battery reaches 13. 3v, the battery isolator cuts off the current flow to the secondary battery, and when the vehicle's primary battery voltage drops to 12. 8v, the voltage-sensitive relay automatically switches to charge the secondary battery, ensuring you always have enough power to start your motor and never get stranded.
BrandFUBOCH #ad
ManufacturerFUBOCH #ad
Height2.99 Inches
Length12.4 Inches
Width8.54 Inches
Part Numberis01