The Best 12V Isolator of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 12V Isolator of 2022. Check our ranking below.
2,950 Reviews Scanned
SaleRank No. #1
12V 140 Amp Dual Battery Isolator Kit - Voltage Sensitive Relay (VSR) Double Battery Automatic Charger, Fits Car, Vehicle, RV, ATV, UTV, Boat, Camper, Truck
- AutoDunk dual battery isolator kit. Ensures your main battery is always charged and ready to start your vehicle. The voltage sensitive relay (VSR) cuts in at 13.3 volts and cuts out at 12.8 volts. It's like having two separate power sources for each battery and only one alternator.
- This compact battery isolator was built ultra-small to fit almost anywhere! A perfect fit under the hood to get close to your dual batteries. Suitable for almost anywhere even off-road, which is water resistant, shock resistant, dust proof and withstand unexpected extreme weather environments.
- Used for DC 12 V two battery systems isolate and charge, universal used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment.
- AutoDunk isolator is safe for use even for your off-road needs in dusty, wet and unexpected extreme weather environments. Great for extreme vibration applications as well.
- Package Includes: 1x battery isolator; 1x red battery cable; 1x black ground battery cable; 2x positive battery terminal; 1x negative battery terminal; 3x crimp lug; 2x heat shrink; 1x ring terminal; 6x cable tie; 4x screw.
SaleRank No. #2
Stinger SGP32 200 AMP Battery Relay Isolator and Relay
- 200 AMP Battery Isolator and Relay
- Prevents primary battery discharge
- Maximum current transfer
- Extends battery life
- Universal 12V Applications
Rank No. #3
Battery Isolator 12v 140Amp Battery Isolator Kit Relay VSR RVS Yachts Double Battery Automatic Charging Relay Dual Kit ZJWAQH
- 【Features】：12V, 140A, 13.3V cut-in voltage, 12.8V cut-out voltage.
- 【Function】：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.
- 【Compatibility】：used for DC 12 V two battery systems isolate and charge, universally used for car, vehicle, RV, ATV, UTV, and boat, also two battery electrical equipment.
- 【Easy to use】： Having Voltage Sensitive Chip, Rely Cuts in at 13.3 Volts and Cuts out at 12.8 Volts to Ensure Primary Battery is Always Ready for Vehicle to Run.
- 【Warranty】：constructed with a weatherproof body（IP65）and durable silver-tipped contacts.100% High Quality and Enjoy Full Life Warranty, Free Exchange
Rank No. #4
MaySpare 200 Amp Mobile Audio Continuous Relay and Battery Isolator High Current Relay 12VDC
- Function: An isolator is used to combine two batteries when a alternator is charging ( engine running) and isolate them when not charging ( engine off) so you can still start your vehicle
- Voltage: 12VDC/ Dimensions: 2-3/8"W x 2-3/8"D x 3-3/4"H/Power Handling: Continuous power handling of 200 amps/ Surge Power Handling: 300 amps
- Advantage: Does not create a voltage drop to the second battery like conventional isolators
- Wrie Diagram : Connect the two small studs one to ground the other to an ignition on source from fuse box , the order on the large/ small studs does not matter
- Provide better service, please contact us if you have any questions!
SaleRank No. #5
Spartan Power Smart Dual Battery Isolator 12V 140A Voltage Sensitive Relay VSR for Vans, Trucks, RVs, Motorhomes, ATV, UTV, Boats, Off Road Vehicles
- Stay Prepared: The Spartan Power Dual Battery Isolator is a smart battery isolator that helps you stay prepared for any situation; It allows you to run two batteries simultaneously, protecting and maintaining the two-battery system while optimizing the charge
- Versatile: Our VSR Battery Isolator can be used to protect any 12 Volt battery; It eliminates the possibility of running the battery out and keeps it fully charged for when you need it most
- Simple to Use: This Dual Battery Isolator is easy to install and operate; Simply connect the two batteries to the isolator and it will efficiently transfer the charge from one battery to another, saving you time and trouble
- Safe: With the Dual Battery Isolator, you never have to worry about overcharging or shorting out your car’s electrical system; It is designed to be safe and reliable, keeping your car running smoothly
- Giving Power to The People: Helping people arm themselves with the right tools and accessories, Spartan Power manufactures ultra-high quality, Made in the USA battery cables every day in Reno, Nevada; Trusted by professionals, enthusiasts, and DIYers everywhere
Rank No. #6
I LITTON Dual Battery Isolator 12V 140 Amp with Voltage Display Smart Battery Isolator Auto & Manual Mode Voltage Sensitive Relay (VSR) Auto Charger Battery Isolator for Truck ATV UTV Marine RV Boat
- 【Manual State Function】： Long Press the button for 3 seconds, the BLUE led will be On, and the manual mode is on. Press the button each time, you can complete the circuit connection and disconnection. Circuit switched on the red indicator, voltmeter lights up at the same time. Switched off the red indicator, voltmeter lights off.
- 【Auto State Function】： Long press the button for 3 button again, the BLUE led will be Off, the Auto mode is on. Voltage exceed 13.3V: Circuit will be automatically connected. Voltmeter & Indicator ON. Voltmeter lower than 12.7V: Circuit will be automatically disconnected. Voltmeter & Indicator Off.
- 【Voltage Display】： This dual battery isolator is constructed with a voltmeter which will display the real-time voltage. If you connect 2 batteries, then the voltmeter will display the battery that has high voltage. The smart battery isolator is universal fit for truck, UTV/ATV, boat, marine, bus, etc.
- 【Voltage Sensitive Relay】： Cut-in voltage: 13.3V and Cut-out voltage: 12.8V. Ensure the main battery is always charged so that you won’t worry about the the battery will drain out and stuck on the road. Very convenient and safe to use.
- 【Pressure Protection】： Input voltage lower than 11V or Input voltage more than 17V: Circuit will be automatically disconnected so as to protect the main battery from over discharging. Please buy and use the dual battery isolator with confident because we offer quick and excellent after-sales service and “12 Months Warranty” for the products.
Rank No. #7
Jtron Car Battery Switch Disconnect 12v 200A Cut Off RV Battery Isolator Switch with 2 Keys for RV Ship Boat Small Yacht Camper Truck
- Heavy Duty: ABS plastic Battery Disconnect Isolator Master Switch with 2 Removable Key Rust and corrosion resistant, Solid cooper nuts and brass washers
- Operation: 2 brass Copper pillar: 0.33"/8mm. used for DC 12-24 V systems, On/Off 2 position, rated current: 100A (12V ), Max. withstanding current: 200A (12V ).
- Easy operation: disconnect and reconnect battery by one simple turn of the knob on it.The key Can Be Taken Down When There is No Power Connection.In this way,Power Supply Will Not Be Viciously Switched On.Waterproof Case Can Better Protect Key Hole.
- Purpose: Disconnects the battery safely,to eliminate any power draw from the battery when vehicle or boat is not in use,sleek modern appearance,sturdy and durable,Widely Used For Car,Marine,Boat,RV,Camper,Truck,ATV, UTV,Battery Banks And Other 12-24V Devices.
- After-sales Service: We provide 1 years’ warranty for all of our products since the purchasing day
Rank No. #8
KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay (VSR) Pro Dual Battery Kit
- 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. 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.
- VOLTAGE SENSITIVE RELAY: The KeyLine 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. 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. 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. Great for extreme vibration applications as well.
- 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. Power wire in, power wire out. What could be easier?
- 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!!
SaleRank No. #9
Dual Battery Smart Isolator DEWINNER - VSR - Voltage Sensitive Relay, 12V 140 Amp Specially Designed for ATV, UTV, Boats, RVs, Campers 5th Wheels Off Road Vehicles Rhino (12V Isolator)
- Easy to Install: No alternator or ignition connection needed. If you want additional components to complete installation, please click "DEWINNER dual battery isolator kit".
- 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. 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)
- 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. Suitable for 12V 4WD, marine, truck, caravan & camping applications
- WHAT YOU GET: SingleIsolator: 140 Amp Smart Battery Isolator; Easy-to-follow directions for the novice DIYer.
- 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!!
Rank No. #10
12V 140Amp Dual Battery Isolator, Ampper Battery Voltage Sensitive Relay (VSR) Smart Battery Isolator for Car, Vehicle, RV, ATV, UTV and Boat
- Purpose: this voltage sensitive relay is design for two battery systems (SUITABLE for Acid-Lead batteries, NOT SUITABLE for Lithium batteries), allow to having two separate power sources while charging by one alternator, it's all need to charge and isolate two battery systems.
- Primary Battery Protected: cuts in at 13.3 volts and cuts out at 12.8 volts. 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.
- Heavy Duty: this voltage sensitive relay is heavy built to suitable for almost anywhere even off-road, which is water resistant, shock resistant, dust proof and withstand unexpected extreme weather environments.
- Compatible: used for DC 12 V two battery systems isolate and charge, universal used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment.
- Easy to use: this VSR comes with mounting plate and 4 bolts for install.
Last update on 2022-12-30 / Affiliate links / Images from Amazon Product Advertising API
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