---
product_id: 61432789
title: "3mtr Split Charge Relay kit with Cargo 12V 140amp Voltage sense Relay & 110amp Leads SCKC303"
brand: "hc-cargo"
price: "130 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/61432789-3mtr-split-charge-relay-kit-with-cargo-12v-140amp-voltage
store_origin: RO
region: Romania
---

# 140A intelligent voltage sensing relay Supports 75-220Ah leisure batteries 3m high-flex 110A cable kit 3mtr Split Charge Relay kit with Cargo 12V 140amp Voltage sense Relay & 110amp Leads SCKC303

**Brand:** hc-cargo
**Price:** 130 Lei
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your adventures with smart charging—never get stranded again!

## Quick Answers

- **What is this?** 3mtr Split Charge Relay kit with Cargo 12V 140amp Voltage sense Relay & 110amp Leads SCKC303 by hc-cargo
- **How much does it cost?** 130 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/61432789-3mtr-split-charge-relay-kit-with-cargo-12v-140amp-voltage)

## Best For

- hc-cargo enthusiasts

## Why This Product

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

## Key Features

- • **Fast & Free Delivery:** Dispatched within one working day via Royal Mail 1st Class—get your power solution without delay.
- • **Universal Compatibility:** Perfect for camper vans, 4x4s, motorhomes, boats, and mobile workshops—power anywhere, anytime.
- • **Plug & Play Installation:** Complete kit with clear instructions, terminals, fuse holders, and cable ties for a tidy, hassle-free setup.
- • **Smart Voltage Sense Relay:** Automatically charges leisure batteries only when driving, protecting your starter battery from drain.
- • **Robust High-Quality Components:** Includes heavy-duty 16mm² British-made cables and durable split conduit for engine bay protection.

## Overview

The 3m Split Charge Relay Kit by HC-Cargo is a premium 12V 140A voltage sense relay system designed to safely and intelligently charge leisure batteries from 75Ah to 220Ah while driving. Featuring high-flex 110A cables, comprehensive installation accessories, and a protective conduit, this kit ensures reliable power management for camper vans, 4x4s, boats, and more. Its smart voltage sensing technology isolates batteries when the engine is off, preventing starter battery drain and guaranteeing vehicle start-up every time.

## Description

Top quality simple to install voltage sense split charge relay system supplied with high flex British 110amp 16mm2 Ready Made leads suitable for safely charging 75ah to 220ah leisure batteries Suitable to install into most Camper Vans, Motor homes, 4x4s, Day Vans, Mobile workshops, Cars and BoatsVoltage sense systems are especially suited for modern vehicles as this type of system does not need an ignition feed or any additional wiring into your vehicle but for modern Intelligent smart charging vehicles with Euro cat 5&6 engines you may need to use a DC to DC charger..  Simply connect your starter battery to your leisure battery(s) using the kit supplied with easy to understand fitting instructions.  The voltage sense relay simply detects the rise in voltage from you vehicles charging system to allow you to charge your leisure battery while you are driving. When you are stopped the relay will isolate both batteries to ensure your starter battery does not drain so you will always be able to start your vehicle. You will be supplied with everything you need to fit this kit including.  12V 140amp HC Cargo Voltage sense Split Charge Relay  2 x 250mm Red 110amp cables  Starter and leisure battery to fuse box leads.  1 x 500mm Red 110amp cable fuse box to relay lead  1 x 2mtr Red 110amp cable relay to fuse box lead  1 x 1mtr 110amp black earth Cable.  Positive & Negative 8mm post type battery terminals  2 X Fuse Holders & 100A Fuses including spares.  15 x Cable ties + fixings to keep everything tidy.  3mtr Split conduit to protect cables in Engine bay.  Screw to fix fuse boxes & cable tie bases  Drill Bit  Easy to understand Fitting Instructions.  Total Red Cable length 3mtrs as advised above in description  This Split Charge Kit will be sent FREE using Royal Mails 1st Class service and will be dispatched within one working day from receiving your order and payment.

## Features

- Simple to install intelligent voltage sense split charge relay system
- Supplied with a top quality 12v voltage sense intelligent relay
- Suitable for charging all 75AH to 220AH leisure batteries
- Supplied with 1mtr earth lead + terminals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Simply Split Charge |
| Brand | HC-Cargo |
| Manufacturer reference | SCKC303 |
| Manufacturer part number | SCKC303 |
| Lift type | Automatic |
| Voltage | 12 Volts |

## Product Details

- **Connector type:** Screw
- **Contact type:** Normally Open
- **Mounting type:** Screw Mount
- **Brand:** HC-Cargo
- **Operation mode:** Automatic

## Images

![3mtr Split Charge Relay kit with Cargo 12V 140amp Voltage sense Relay & 110amp Leads SCKC303 - Image 1](https://m.media-amazon.com/images/I/81rbg9hvvaL.jpg)

## Questions & Answers

**Q: Can this be fitted in a Fiat ducato 1988**
A: Can’t see why it couldn’t I fitted to a 2006 caddy had to get extra wire as it wasn’t quite long enough so make sure before you order you map your run and check if you need this one or the 5m one

**Q: Why is my relay clicking on and off when im driving now**
A: If you have a smart charging alternator it will not charge all the time so relay would cut in and out

**Q: Is this kit compatible for none smart alternator vehicles also..**
A: It should be as I fitted this on our 1998 campervan

**Q: I have this item but it doesn't seem to switch off and isolate batteries after the ignition is switched off. what could the issue be here?**
A: We've fitted ours today.  The instructions say that sometimes if takes a few minutes to work when the ignition is switched off.  Have you tried giving It a couple of minutes?

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Brilliant piece of kit
  

*by L***S on Reviewed in the United Kingdom on 4 August 2020*

Fitted it to my van. Has been working great.Instructions are very clear. finding a hole or making a hole to run the cable to the car battery was a bit tricky but it depends on the model. Some models have easily Accessible pre drilled holes. My kangoo was a bit of a nightmare. I had to remove my car battery and air filter to gain enough access to drill a hole. Once this was done it was very easy. Ran cable into cab under the passenger door seal and into the back where my deep cycle battery is located. so much easier than taking it out every couple of weeks to recharge. once fitted just drive around and the battery is charged. Very happy.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good product
  

*by A***R on Reviewed in the United Kingdom on 2 October 2020*

Fitted this to my T5. Easy to fit and good instructions. Works a treat 👍

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Worth every penny
  

*by M***E on Reviewed in the United Kingdom on 18 June 2020*

Great bit of quality kit put together for nice fittings used would defo use again

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ro/products/61432789-3mtr-split-charge-relay-kit-with-cargo-12v-140amp-voltage](https://www.desertcart.ro/products/61432789-3mtr-split-charge-relay-kit-with-cargo-12v-140amp-voltage)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-22*