---
product_id: 239258875
title: "- 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers"
brand: "dewinner"
price: "$3539"
currency: MXN
in_stock: true
reviews_count: 5
category: "Dewinner"
url: https://www.desertcart.mx/products/239258875-12v-140-amp-dual-battery-smart-isolator-and-atv-utv
store_origin: MX
region: Mexico
---

# 140A high current capacity Voltage Sensitive Relay (VSR) tech Dual battery automatic charging - 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers

**Brand:** dewinner
**Price:** $3539
**Availability:** ✅ In Stock

## Summary

> 🔋 Double your power, halve your worries!

## Quick Answers

- **What is this?** - 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers by dewinner
- **How much does it cost?** $3539 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/239258875-12v-140-amp-dual-battery-smart-isolator-and-atv-utv)

## Best For

- dewinner enthusiasts

## Why This Product

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

## Key Features

- • **Reliable & Durable:** Brass contacts and panel mount design built to withstand rugged conditions.
- • **Smart Voltage Control:** Automatically engages at 13.3V and disengages at 12.8V to protect your batteries.
- • **Powerhouse Performance:** Handles up to 140 Amps for robust dual battery charging.
- • **Plug & Play Installation:** Comes with a complete wiring cable kit designed for easy ATV/UTV setup.
- • **Seamless Dual Battery Management:** Ensures your primary battery stays fully charged without draining the secondary.

## Overview

The DEWINNER 12V 140 Amp Dual Battery Smart Isolator with Voltage Sensitive Relay is a high-capacity, automatic dual battery charging system designed for ATV and UTV applications. It intelligently manages battery voltage to ensure your primary battery remains charged and ready, while the included wiring kit simplifies installation. Built with durable brass contacts and a panel mount design, it delivers reliable performance in demanding environments.

## Description

Buy DEWINNER 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Easy install - Easy install! Really works great!!
Review: Good product, works great - Good product, the wiring was a little short for the side by side install but otherwise works great

## Features

- VOLTAGE SENSITIVE RELAY: DEWINNER 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 power sources for each battery and only one alternator!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08JXKM9FT |
| Best Sellers Rank | #1,327,919 in Automotive ( See Top 100 in Automotive ) #2,267 in Battery Chargers |
| Brand | DEWINNER |
| Coil Voltage | 12 Volts |
| Connector Type | Crimp |
| Contact Current Rating | 140 Amps |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Current Rating | 140 Amps |
| Date First Available | September 24, 2020 |
| Item Weight | 3.85 pounds |
| Item model number | DE-C |
| Manufacturer | DEWINNER |
| Maximum Switching Voltage | 13.5 Volts |
| Minimum Switching Voltage | 12.8 Volts |
| Mounting Type | Panel Mount |
| Number of Terminals | 3 |
| Operation Mode | Automatic |
| Product Dimensions | 12.2 x 8.5 x 3 inches |
| UPC | 759663942126 |
| Upper Temperature Rating | 80 Degrees Fahrenheit |

## Product Details

- **Connector Type:** Crimp
- **Contact Material:** Brass
- **Contact Type:** Normally Open
- **Current Rating:** 140 Amps
- **Mounting Type:** Panel Mount

## Images

![- 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers - Image 1](https://m.media-amazon.com/images/I/71zQ0WA8qiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy install
*by R***N on December 22, 2025*

Easy install! Really works great!!

### ⭐⭐⭐⭐⭐ Good product, works great
*by S***R on July 2, 2021*

Good product, the wiring was a little short for the side by side install but otherwise works great

### ⭐⭐⭐⭐ Review
*by M***N on September 29, 2024*

👍

## Frequently Bought Together

- DEWINNER 12V 140 Amp Dual Battery Smart Isolator & ATV UTV Wiring Cable Kit - Voltage Sensitive Relay - VSR, Dual Battery Chargers
- TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing
- TKDMR 160Pcs Copper Wire Lugs AWG2 4 6 8 10 12 with Heat Shrink Set, 80Pcs Battery Cable Ends Ring Terminals Connectors Tubing Assortment Kit

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**Shop now:** [https://www.desertcart.mx/products/239258875-12v-140-amp-dual-battery-smart-isolator-and-atv-utv](https://www.desertcart.mx/products/239258875-12v-140-amp-dual-battery-smart-isolator-and-atv-utv)

---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-03-04*