---
product_id: 143929842
title: "Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module"
brand: "duokon"
price: "¥31514"
currency: JPY
in_stock: true
category: "Automotive"
url: https://www.desertcart.jp/products/143929842-duokon-dc-12v-dual-battery-smart-isolator-wiring-kit-vsr
store_origin: JP
region: Japan
---

# Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module

**Brand:** duokon
**Price:** ¥31514
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module by duokon
- **How much does it cost?** ¥31514 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/143929842-duokon-dc-12v-dual-battery-smart-isolator-wiring-kit-vsr)

## Best For

- duokon enthusiasts

## Why This Product

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

## Description

Features:&#xA0; Allow two batteries to be combined when charged and isolated when not charged Compared with the battery isolation diode (0.6V), there is no voltage decline. Comply with ISO8846 ignition protection, suitable for engine room. Built-in LED indicator light(light when VSR starts). Surface or panel installation is optional that provide flexibility during installation. Optional storage mode allows zero power consumption while the engine is running. Helps maintain a full battery, avoiding the possibility of battery depletion and towing at sea.  Specification: Product Name: Dual Battery Isolator(Battery is not Included) Condition: 100% Brand New Material: Plastic Color: Black Size: As Picture Shown Nominal voltage: DC 12V Combined voltage: DC 13.3V Open-circuit voltage: DC 12.8V Continuous rating: DC 125A Intermittent rating: DC 140A Power consumption: 10mA (standby) /330mA (joint) / 0mA (storage) Terminal stud :M6 (1/4 &quot;) Note: ISO8846/SAE J1171(ignition protection) without battery Package Weight: Approx. 1650g/58.2oz  Package List: 1 * Voltage Sensitive Relay with Installation Screw 1 * 6 Meters Red Cable 1 * 600mm Black Ground Wire 1 * Positive Pole Battery Terminals 1 * Negative Pole Battery Terminals 2 * SC16-8 Connection Piece (Used for Red Cable) 1 * SC25-8 Connection Piece (Used for BlackCable) 2 * Red Pyrocondensation 6 * 200mm Cable Ties 1 * User Manual

## Features

- 【LED indicator】Built-in LED indicator (on when VSR starts). Remote LED port indicating VSR status (excluding LED).
- 【Ultra Powerful】Allow two batteries to be combined when charged and isolated when not charged. No voltage drop compared with the battery isolation diode (0.6v).
- 【High performance】Helps maintain a full battery, avoiding the possibility of battery depletion and towing at sea. Optional storage mode allows zero power consumption while the engine is running.
- 【Easy installation】Do not connect the car ignition switch line, do not change the original car line. Conform to the ISO8846 ignition protection, suitable for engine room.
- 【Wide application】 Suitable for military, adventure, off-road vehicles and car audio enthusiasts, the car installed with large capacity of electric equipment, and the current popular caravan caravan.
- ›See more product details

## Images

![Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module - Image 1](https://images-na.ssl-images-amazon.com/images/I/614ZFm1Y0EL.jpg)
![Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module - Image 2](https://images-na.ssl-images-amazon.com/images/I/61aeczK1ZKL.jpg)
![Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module - Image 3](https://images-na.ssl-images-amazon.com/images/I/61O8HboMiyL.jpg)
![Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module - Image 4](https://images-na.ssl-images-amazon.com/images/I/51Ri0I80KXL.jpg)
![Duokon DC 12V Dual Battery Smart Isolator Wiring Kit VSR Voltage Sensitive Relay Module - Image 5](https://images-na.ssl-images-amazon.com/images/I/51m2LKQJnxL.jpg)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-17*