Top 10 Auxiliary Battery Kit – Automotive Replacement Battery Switches

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1. Xscorpion

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200 AMP Heavy Duty Dual Auxiliary Battery Isolator Copper Cables Complete Kit

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Xscorpion #ad - Switching power: 10-16VDC. Two gold plated agu fuse holders with two 100 amp gold fuses to fully protect both batteries and all vehicles electrical components. Engine start/ run loads also attach to this post. It does not create voltage drop to the second battery like conventional isolators.

Draws less than 1 amp when on. Two #10 spade/lugs to connect to the battery isolation relay and two quick splice connectors to connect switched key/ignition 12 volt positive and ground from vehicle to small posts on battery isolation relay. Great for isolation a second battery making it dedicated to the stereo system, starter, or additional electronics. One 4 foot high quality 4 gauge 100% OFC copper cable to connect main/starting battery to the other post of the battery isolation relay.

One 10 foot superior quality, heavy duty cable assembly utilizing 4 gauge 100% ofc copper. 200 amp battery isolation relay. Four 4 gauge gold ring terminals 3/8” opening with matching red rubber protective boots. One 20 foot red & black 16 gauge OFC copper cable. Relay 'closes' with key or switch engine 'on' connecting both batteries to charging system, and 'opens' with key or switch 'off' to isolate main / start battery from any load that can discharge main battery.
BrandXscorpion #ad
ManufacturerXscorpion #ad
Part NumberRL-KIT2

2. MaySpare

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

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

3. JOYHO

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JOYHO 12V 140Amp Voltage Sensitive Relay & Wiring Cable Kit, Complete VSR Double Battery Automatic Charger, ATV, ATV, Boats & More, Fits Trucks, UTV, SUV, Dual Battery Isolator Kit

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JOYHO #ad - If you are not 100% satisfied with your purchase, simply take advantage of the No Questions Asked, 30-Day Money Back Guarantee. It's like having two separate power sources for each battery while only having one alternator. This dual battery isolator is also built to withstand extreme weather environments, vibration and is water resistant.

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. Fits a wide variety of vehicles - this dual battery isolator kit with printed installation instruction manual gives you the power for your recreation without needing to worry about getting home after. 12v, truck, suitable for 12V 4WD, 13.3v cut-in voltage, 12. 8v cut-out voltage, 140A, marine, caravan & camping applications.

Rugged durability - this dual battery isolator kit is all you need to charge a dual battery system. Easy to install - no alternator or ignition connection needed, connectors, screws, including leads, You don't need any additional components to complete installation as everything is included in the kit, zip ties, and more. It features a voltage sensitive chip ensuring your primary battery is always ready for your vehicle to run. Buy with confidence - every 140 amp dual battery isolator is backed by an industry leading 12-month warranty.
BrandJOYHO #ad
ManufacturerJOYHO #ad
Height2.05 Inches
Length2.64 Inches
Weight3.75 Pounds
Width2.64 Inches
Part NumberJH50669-12SC

4. Xscorpion

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Heavy Duty Dual Auxiliary Battery Isolator with Copper Cables Complete Kit Fuses

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Xscorpion #ad - One 10 foot superior quality, heavy duty cable assembly utilizing 4 gauge 100% ofc copper and one 4 foot high quality 4 gauge 100% OFC copper cable to connect main/starting battery to the other post of the battery isolation relay.

Engine start/run loads also attach to this post. Four 4 gauge gold ring terminals 3/8” opening with matching red rubber protective boots. Relay 'closes' with key or switch engine 'on' connecting both batteries to charging system, and 'opens' with key or switch 'off' to isolate main / start battery from any load that can discharge main battery. Two gold plated agu fuse holders and two 100 amp gold fuses to fully protect both batteries and all vehicle electronical components.

Two quick splice connect the switched key/ignition 12 volt positive and ground from vehicle to small posts on battery isolation relay. Two #10 spade/lug to connect the battery isolation relay. One 20 foot red & black 16 gauge OFC copper cable. One 150 amp surge/ 80 amp constant battery isolation relay.
BrandXscorpion #ad
ManufacturerXscorpion #ad
Part NumberRL-KIT1

5. Can-Am

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Can-Am New OEM Auxiliary Dual Battery Installation Kit, 715003758, Defender

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Can-Am #ad - Allows you to add a second 30ah battery for that dual battery setup that will give you the extra juice you?ll need to power auxiliary electrical components like a sound system or winch.

Kit includes an additional battery junction block, all necessary wiring and the battery holder. Additional battery sold separately 515176151. Equipped with an integrated smart battery isolator that will prevent your auxiliary electrical components from draining your starting battery. Fits: 2016-2019 can-am defender hd8, 2017-2019 can-am defender hd5, 2017-2019 can-am defender max hd8, 2016-2019 can-am defender hd10, 2017-2019 Can-Am Defender Max HD10.
BrandCan-Am #ad
ManufacturerCan-Am #ad
Weight6 Pounds
Part Number715003758

6. KeyLine Chargers

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KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay VSR Pro Dual Battery Kit

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KeyLine Chargers #ad - It's like having two separate power sources for each battery while only having one alternator! Rugged durability: unlike other isolators on the market, the keyline automatic 140 Amp Dual Battery Isolator is IP65 Certified. Zero voltage drop: 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.

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. Easy-to-follow directions for the most novice DIYer.

Great for extreme vibration applications as well. 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 to get close to your dual batteries. 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. Buy with confidence: every 140 amp dual battery isolator is backed by an industry leading 12-month warranty. Power wire in, power wire out.
BrandKeyLine Chargers #ad
ManufacturerKeyLine Chargers #ad
Height2 Inches
Length2.6 Inches
Weight0.5 Pounds
Width2.6 Inches
Part NumberISO-PRO140
ModelISO-PRO140
WarrantyManufacturer warranty for 1 year from date of purchase.

7. True Amalgamated

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True UTV-SBI-CM UTV Dual Battery Connect & Monitor Kit

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True Amalgamated #ad - 1- 36mm blue led volt meter with dual rdisplay requires29mm mounting hole, inludesx 18ga duplex wire with connectors. 1 ea- trueinch sealed 6ga Red and Black Cables with 6mm lugs. 1- true utv-sbi-18 isolator with silicon insulators andDual Lock fastner. Returns authorizedamazon will notaccepted.
BrandTrue Amalgamated #ad
Part NumberUTV-SBI-15CM
ModelUTV-SBI-15CM

8. True Amalgamated

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True UTV-SBI-CK UTV Dual Battery Kit.

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True Amalgamated #ad - 1- true 12 inch sealed Red 6ga Cable with two 6mm lugs. 1- true 18 inch sealed Red 6ga Cable with two 6mm lugs. 1- true 12 inch sealed Black 6ga Cable with two 6mm lugs. 1- true utv-sbi-18 isolator with silicon insulators and 3M Dual Lock fastener. Any returns authorized by amazon will not be accepted.
BrandTrue Amalgamated #ad
ManufacturerTrue Amalgamated (TrueAm) #ad
Part NumberUTV-SBI-CK
ModelUTV-SBI-CK

9. RANSOTO

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

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RANSOTO #ad - This item can install to most of vehicle, RV, for example Truck, ATV, UTV, SUV, Boat and so on. 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.

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. It can work in dusty, wet and unexpected extreme weather condition.
BrandRANSOTO #ad
ManufacturerANODIZING RACING #ad
Height3.15 Inches
Length12.4 Inches
Width8.66 Inches
Part NumberRZ084

10. UCkasayfy

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Dual Battery Isolator Kit 12V 140Amp, Voltage Sensitive Relay VSR,Compatible with RV Marine Car Vehicles Truck Caravan Off-road Camper Yacht,Not Fit for lithium batteries

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UCkasayfy #ad - Working voltage——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 run your vehicle. 12-month warranty——we have exquisite craft, strict quality control along with excellent after-sales service.

That is why our products are worthy of your purchase. Function——with the engine running the vsr will engage when the starting battery reaches 13. 3 volts and the LED light will illuminate. This means that both batteries are now linked and the system is working. Once you turn off your vehicle the system will disengage the two batteries as it reaches 12.

8 volts, leaving your main battery safe to start again. Important note——when connecting accessories to your second battery ensure they are fused within 098ft. Wide compatibility——this battery isolators are small and suitable for almost anywhere, Boats, UTV, RV's,marine vehicle, for ATV, truck, caravan.
BrandUCkasayfy #ad
ManufacturerUCkasayfy #ad
Part NumberBR002-12V