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12V 140 Amp Dual Battery Isolator w/Dual Battery Kit

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  • 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!!

Protect Your Start Battery

With Keyline Charger's smart battery isolator, you can ensure that your start battery is never compromised - even when powering electronics while your vehicle is turned off. 


Protect Your Assets Quality without Compromise

If you are not 100% satisfied with your purchase, simply take advantage of the No Questions Asked, 30-Day Money Back Guarantee!!

KeyLine Chargers

GET GOING WITH EASE & SECURITY

Forget the traditional diode relays and so-called "solid state" devices that can rob almost 2 amps of output voltage! The Keyline Dual Battery Isolator is the original dual battery isolator and still the only SMART unit designed with cutting edge programming to deliver optimum performance with ZERO sacrifice. In order to assist in install, the Keyline 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 

WHAT THE PROS HAVE TO SAY

Dennis Loosier
Kaitlynd Wilson
Toby Brohlin
Wade Skeen

I'm impressed with this product and Keyline as a company.

– Dennis Loosier

Texas Rancher and Farmer

KeyLine Chargers

THE SOLUTION FOR ANY BOATING ADVENTURE

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 product is safe for use even for your off-road needs in dusty, wet and unexpected extreme weather environments. Never go anywhere again without the ability to start your vehicle.  With the Keyline Battery Isolator you now have a fully charged backup battery present at all times.


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