![]() 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.100% SATISFACTION: no reason for return or change. Easy to use: this VSR comes with mounting plate and 4 bolts for install.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.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.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. Primary Battery Protected: cuts in at 13.3 volts and cuts out at 12.8 volts.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.This is why we listed the key features of each of these 12V Battery Isolators below: Since we’ve mentioned 10 different models of 12V Battery Isolators on the above list, it may be difficult for you to find the right one for your needs. MaySpare Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay VSR Double Battery Automatic…ĭual Battery Isolator Kit, GOLDPAR 12V 140Amp Sensitive Relay VSR Pro Dual Battery Kit & Wiring…ĭual Battery Isolator Kit 12 Volt 140 Amp Voltage Sensitive Relay Complete VSR Double Battery…Īmpper Battery Switch, 12-48 V Battery Power Cut Master Switch Disconnect Isolator for Car, Vehicle,…Ģ50 AMP Dual Battery Smart Isolator Universal 12V/24V Voltage Sensitive Relay Intelligent Dual… MaySpare 12V 140Amp Voltage Sensitive Relay VSR Double Battery Automatic Charging Relay Dual Smart… KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay (VSR) Pro Dual Battery… NVX 500 Amp Mobile Audio Relay Battery IsolatorĪmpper 12V 140Amp Dual Battery Isolator, Battery Voltage Sensitive Relay (VSR) Smart Battery… Ideally, the circuit should be very low power so as not to drain the house battery during days when no solar or shore power charging is available.Stinger SGP32 200 AMP Battery Relay Isolator and Relay If the voltage on the house battery is greater than around 13 volts, closing the boost solenoid will charge the chassis battery.Īnd so my question: Got any unique way to monitor battery voltage for some level over 13 volts and provide an output to activate a relay? I'll probably use an "Arduino relay module" that includes a transistor driver as I believe the boost solenoid draws a fair bit of current. Then I realized my boost solenoid is already most of a battery combiner. My thought to fix this issue was to replace the battery isolator with a battery combiner – in simple terms a relay to tie the batteries together if either side is charging. The downside of this system is that the chassis battery can't charge from the solar panel or on-board battery charger. If the chassis battery is dead, this may allow the engine to start by paralleling the batteries. There's a continous-duty boost solenoid that ties house and chassis batteries together. The house batteries are also charged by a solar panel or a 120VAC (North America) – 12v charger which can be operated from 'shore power' or the generator. The engine alternator charges the engine battery and the house battery via a battery isolator – both batteries charge, but the loads are isolated. I'm working on resolving some potential issues on our 1976 GMC Motorhome.
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