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Ampper

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

    • Based on 117 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Ampper Direct
Arrives May 19 – Jun 12
Order within 12 hours and 58 minutes
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Color: 12V 140Amp


Size: VSR Kit


Features

  • Purpose: this voltage sensitive relay kit 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 kit 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 kit comes with all the pieces needed (battery cables, battery terminals, copper lugs, heat shrinks, cable ties) for a complete installation.

Description

Ampper 12V battery voltage sensitive Relay (VSR) dual battery isolator kit for car, vehicle, RV, ATV, UTV and boat. Specifications: 1, Design for two battery systems isolate and charge, it's all need to charge and isolate two batteries (SUITABLE for Acid-Lead batteries, NOT SUITABLE for Lithium batteries). 2, Allow to having two separate power sources while charging by one alternator. 3, Cuts in at 13.3 volts and cuts out at 12.8 volts. 4, 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. 5, Heavy built to suitable for almost anywhere even off-road, which is water resistant, shock resistant, dust proof and withstand unexpected extreme weather environments. 6, Universal used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment. 7, VSR kit comes with all the pieces needed (battery cables, battery terminals, copper lugs, heat shrinks, cable ties) for a complete installation. Complete kits includes: 1 x voltage sensitive Relay (VSR). Red and black battery cables. 3 x battery terminals. 3 x copper lugs. heat shrinks. cable ties. 4 x bolts for install. 100% Satisfaction. No reason for return or change. Order it now!


Manufacturer: ‎Ampper


Brand: ‎Ampper


Model: ‎Am-VSR0201


Item Weight: ‎1.62 pounds


Product Dimensions: ‎8.5 x 8.5 x 3 inches


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎Am-VSR0201


Special Features: ‎Cuts in at 13.3 volts and cuts out at 12.8 volts, Universal used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment., Ensure your primary battery is always charged and ready to start your engine, Design for two battery systems, Heavy built to suitable for almost anywhere even off-road


Date First Available: December 26, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 19 – Jun 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great unit to install a second battery
Color: 12V 140Amp Size: VSR Pro
Now I am running less accessories off my crank battery. Its been working as advertised
Reviewed in the United States on September 19, 2022 by Dosequzla
    • U can Taylor the switching voltage by adding diodes to the ground wire.
Color: 12V W/ Voltmeter Size: VSR
In my case did not appreciate the auto hi voltage shutdown.fyi it sensors both batteries for charging switching.
Reviewed in the United States on September 2, 2022 by jon galindo
    • Keep a spare battery fully charged for camping trips and such
Color: 12V 140Amp Size: VSR
Helps to have an extra 12 V battery on camping trips for charging phones and using inverters now I don’t have to worry about draining my start battery in my vehicle
Reviewed in the United States on August 2, 2022 by Geno brant
    • Exactly what I was looking for
Color: 12V 140Amp Size: VSR
This is easy to install and does exactly what it's supposed to do.
Reviewed in the United States on July 22, 2022 by E Smoove
    • Sèems to be doing the job.
Color: 12V 140Amp Size: VSR Pro
Seems to be doing the job.
Reviewed in the United States on January 25, 2022 by Taylor Johnson
    • Works Great! Great Price! Beware the 140a Rating is a *Peak* Rating, not Continuous.
Color: 12V 140Amp Size: VSR
Installed this Ampper 12v 140a Battery Isolator between our truck's battery and the DC to DC charger in our truck camper to prevent discharge of our truck's battery by the DC to DC charger when the alternator is off-line (engine is not running). Works as advertised. One word of caution for those who plan to run high current loads through this battery isolator. This Ampper "140a" battery isolator is only rated for 50-70a of "continuous" current as per the spec sheet that came with this battery isolator. The 140a rating is only a "peak" current rating. A bit misleading. ... show more
Reviewed in the United States on March 31, 2021 by Melodie
    • Worked great for all of 2 days.
Color: 12V W/ Voltmeter Size: VSR Pro
Installed in my truck and 2 Days later out of the blue it just died. I have to say I'm a pretty forgiving guy but this does not speak very highly for their quality control department. But it's an awesome idea when it works, I traded it in for a $20 stinger relay and have not had a problem since.
Reviewed in the United States on February 9, 2022 by Moe Humphries
    • Perfect solution
Color: 12V 140Amp Size: VSR Kit
east to install.
Reviewed in the United States on February 25, 2022 by Amazon Customer

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