---
product_id: 19698571
title: "Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine"
brand: "keyline chargers"
price: "55.91 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/19698571-dual-battery-isolator-kit-12v-140-amp-voltage-sensitive-relay
store_origin: OM
region: Oman
---

# 140A max current capacity IP65 water & dust resistant Auto engages at 13.3V, disengages at 12.8V Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine

**Brand:** keyline chargers
**Price:** 55.91 OMR
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your adventures without compromise!

## Quick Answers

- **What is this?** Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine by keyline chargers
- **How much does it cost?** 55.91 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/19698571-dual-battery-isolator-kit-12v-140-amp-voltage-sensitive-relay)

## Best For

- keyline chargers enthusiasts

## Why This Product

- Trusted keyline chargers brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Power Flow:** Eliminates voltage drops with solid-state relay tech for uninterrupted dual battery charging.
- • **Rugged & Weatherproof:** IP65-rated design built to withstand dust, water, vibration—perfect for off-road, marine, and daily drives.
- • **Smart Voltage Sensitivity:** Automatically connects/disconnects at optimal voltages to keep your starter battery fully charged.
- • **Confidence-Backed Warranty:** 12-month industry-leading warranty plus 30-day money-back guarantee for risk-free power upgrades.
- • **Plug-and-Play Installation:** Complete wiring kit with marine-grade terminals and clear guide for hassle-free DIY setup.

## Overview

The KeyLine Chargers Dual Battery Isolator Kit is a compact, 140A solid-state voltage sensitive relay designed for 12V dual battery systems. It automatically manages power flow by engaging at 13.3V and disengaging at 12.8V, preventing battery drain and ensuring optimal charging. Built tough with an IP65 rating, it’s ideal for automotive, marine, RV, UTV, and off-road applications. The kit includes all necessary cables and terminals for easy DIY installation, backed by a 12-month warranty and 30-day money-back guarantee.

## Description

Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine

## Features

- Advanced Dual Battery Isolator 12V Kit – Designed for superior performance, this dual battery kit ensures efficient power distribution between two batteries without voltage drops. Unlike traditional battery isolator diodes, this automatic disconnect switch eliminates power loss while maintaining a seamless connection between your primary and auxiliary power sources. Compact at 2.6” x 2.6” x 2”, it’s perfect for under-hood installations or as part of a battery relocation kit.
- Smart Voltage Sensitive Relay (VSR) for Optimal Charging – Featuring a 12V dual battery wiring kit, this system automatically activates at 13.3V and disengages at 12.8V, ensuring your starting battery remains fully charged. Whether you're installing a marine dual battery kit for your boat, a dual battery kit for truck applications, or need a battery isolator 12V kit for off-grid power, this setup prevents battery drain and guarantees reliable performance.
- Built for Extreme Conditions & Rugged Durability – Engineered for off-road adventures, marine use, and daily driving, this dual battery isolator kit is IP65-rated for water, dust, and vibration resistance. Its solid-state design ensures durability, making it an excellent choice for automotive, RV, UTV, and marine battery isolator needs. Whether battling tough trails or navigating open waters, count on this dual battery wiring kit to provide uninterrupted power.
- Complete Dual Battery Wiring Kit for Easy DIY Installation – No complicated setup required! This battery isolator kit includes a 140A voltage sensitive relay, 12" red power cable, 24” red power cable, 12" black ground cable, tinned copper lugs, marine-grade brass terminals, heat shrink tubing, cable ties, and an easy-to-follow install guide. No complex wiring or diodes required—this is a plug-and-play solution for any 12V dual battery wiring setup.
- Trusted Performance with Warranty & Money-Back Guarantee – Every dual battery kit by KeyLine Chargers is backed by a 12-month industry-leading warranty. If you’re not 100% satisfied with your purchase, take advantage of our 30-day money-back guarantee—no questions asked! Drive with confidence knowing you have a premium battery isolator 12V kit keeping your power system running at full capacity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KeyLine Chargers |
| Brand | KeyLine Chargers |
| Model | ISO-Variation |
| Item Weight | 8 ounces |
| Product Dimensions | 1.97 x 1.97 x 1.97 inches |
| Item model number | Iso-Pro140 |
| Is Discontinued By Manufacturer | No |
| Exterior | PVC Matte Black |
| Manufacturer Part Number | Iso-Pro140k |
| Lift Type | Automatic |
| Voltage | 12 Volts |

## Images

![Dual Battery Isolator Kit 12V - 140 Amp Voltage Sensitive Relay (VSR) for Dual Battery Setup - Automatic Disconnect Switch for Car, Truck, RV, UTV, ATV, Marine - Image 1](https://m.media-amazon.com/images/I/61MYMB46z7L.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Dual Battery Isolator Kit 12v 140 Amp - ATV/UTV Wiring Kit - Voltage Sensitive Relay - VSR - Boat Dual Battery Smart Isolator 12v Kit, Automatic Battery Disconnect Switch 12V by KeyLine Chargers
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**Shop now:** [https://www.desertcart.com.om/products/19698571-dual-battery-isolator-kit-12v-140-amp-voltage-sensitive-relay](https://www.desertcart.com.om/products/19698571-dual-battery-isolator-kit-12v-140-amp-voltage-sensitive-relay)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-22*