keyline chargers 12v 140 amp dual battery isolator voltage sensitive relay (vsr) pro dual battery kit keyline chargers <strong>your search for the best automatic battery isolator is over! keyline chargers 140amp battery isolator is the best value battery charger on the market. </strong> <ul> <li><strong>zero voltage drop.</strong> won't rob precious power from your batteries and electrical system, unlike heat sinking competitors'.</li> <li><strong>small convenient size. </strong>only about 2 inches tall, wide & deep (2.6" x 2.6" x 2") the isolater fits just about anywhere!</li> <li><strong>fast & easy installation. </strong>simple power wire in, power wire out install. comes with mounting plate/template.</li> <li><strong>ip65 weather & strong vibration protection. </strong>suitable for all off-road vehicles and weather exposed applications.</li> <li><strong>most efficient programming in the business. </strong>ensures your electrical system functions properly and batteries charge accurately.</li> <li><strong>voltage sensitive relay (vsr). </strong>specially designed for atv, utv, boats, rv's, campers, 5th wheels, off road vehicles, rhino, polaris, artic, cat, etc.</li> <li>comes with necessary hardware & mounting instructions</li> <li><strong>dual battery voltage sensitive isolator user guide</strong></li> <li><strong>full 1 year warranty</strong></li> </ul> when it comes to smart isolating... there is clear winner. the keyline smart battery isolator works perfectly for all of your dual battery vehicles. when you're ready to go, don't get caught with a dead battery or left in the dust by inferior isolators! do yourself a favor and <strong>buy one for a friend or a second vehicle</strong> that needs it - you'll thank us (and yourself) for the good decision later.<p> by <strong>keyline chargers</strong>