12V 140Amp Voltage Sensitive Relay VSR Dual Smart Battery Isolator for Car Vehicle RV ATV UTV Boat


Upgraded version 1.5 dual battery isolator adopts imported power management chip, with novel electronic circuit intelligent automatic management function, and has the characteristics of strong water resistance, low loss, good heat dissipation, high efficiency.

Instructions: When the voltage of the main battery is greater than 13.3V, the main battery will charge the secondary battery. When the voltage of the main battery is lower than 12.7∨, the main battery is disconnected from the secondary battery.

Features of 12V 140Amp Voltage Sensitive Relay VSR Dual Smart Battery Isolator

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. 100% SATISFACTION: no reason for return or change.


Application of 12V 140Amp Voltage Sensitive Relay VSR Dual Smart Battery Isolator

The battery isolator is mainly used in off -road vehicles, RVs, or other special vehicles that need to add more electric equipment, special use vehicles. There are also applications in the industrial field.





















Working Principle of Monitoring Mini Voltage Sensitive VSR Relay Dual Battery Controller Isolator 12V 50AMP

When the VSR connection and disconnecting the auxiliary battery and the starting battery engine according to the current charging level, when the battery starts at 13.2 volts, the VSR will start after 15 seconds, and the LED light is on. This means that both batteries are connected and the system is running. Once the vehicle system is turned off, two batteries will be disconnected at 12.8 volts after 15 seconds, allowing your main battery to restart the safety of the main battery.


Installation of Monitoring Mini Voltage Sensitive VSR Relay Dual Battery Controller Isolator 12V 50AMP

1. Connect the (+) positive wire from the Start Battery to the terminal on the VSR marked Main. 2. Connect the (+) positive wire going to the Auxiliary Battery's positive terminal to the other terminal on the VSR. 3. Connect the thin black earth wire to either the vehicle chassis or the Start Battery's negative terminal. 4. Secure the VSR in place. IMPORTANTNOTES It is recommended that a 50 Amp fuse is installed between the Starter Battery and the VSR. The negative wire will run from the Starter Battery terminal through to the Auxiliary Battery either directly or via the vehicles chassis. There is a delay built in to the VSR which means it can take up to 15 seconds for the VSR to connect or disconnect. The VSR has a light built in which will illuminate when the VSR is engaged (both batteries are connected). If the VSR does not disconnect when you switch the vehicles engine off try turning your high beam lights on for a few minutes


Application of RV Dual Battery VSR Voltage Sensitive Relay Marine ACR Automatic Charging 125A Camper Split Charger Relay
Suitable for ATV/UTV, Fit for Car Pioneer 1000 SxS Polaris Ranger Polaris RZR.
After the engine runs for 15 seconds, the VSR starts when the starter battery reaches 13.2 volts, and the LED lights up. After shutting down the vehicle, the system will disconnect both batteries when it reaches 12.8 volts after 15 seconds, allowing your main battery to restart safely.
Lightweight and designed for load fluctuations in utv or motorcycle stators. The maximum operating current is 50A at 12V continuous load, and the peak current at 12V is 70A for 15 seconds.

Contact Details:

Andy Wu

Email: andy@tianrui-fuse.com.cn

MP/Whatsapp: +86 13532772961

Wechat: HFeng0805

Skype: andywutechrich

QQ: 969828363