---
product_id: 212862537
title: "140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR"
brand: "brand: keyline charger"
price: "€ 229.16"
currency: EUR
in_stock: true
reviews_count: 15
url: https://www.desertcart.com.cy/products/212862537-140-amp-dual-battery-isolator-and-atv-utv-wiring-kit
store_origin: CY
region: Cyprus
---

# 140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR

**Brand:** brand: keyline charger
**Price:** € 229.16
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR by brand: keyline charger
- **How much does it cost?** € 229.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/212862537-140-amp-dual-battery-isolator-and-atv-utv-wiring-kit)

## Best For

- brand: keyline charger enthusiasts

## Why This Product

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

## Description

Full description not available

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00WTAFR52 |
| Best Sellers Rank | #17,933 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Replacement Battery Relocation Kits #596 in Automotive Replacement Electrical System Relays |
| Date First Available | April 28, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | Iso-Pro140 |
| Manufacturer | KeyLine Chargers |
| Product Dimensions | 1.97 x 1.97 x 1.97 inches |

## Images

![140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR - Image 1](https://images-na.ssl-images-amazon.com/images/I/81zcTQij3YL.jpg)
![140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR - Image 2](https://images-na.ssl-images-amazon.com/images/I/71TGnD%2BZxNL.jpg)
![140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR - Image 3](https://images-na.ssl-images-amazon.com/images/I/71c439xcxcL.jpg)
![140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR - Image 4](https://images-na.ssl-images-amazon.com/images/I/711GNlRiGJL.jpg)
![140 Amp Dual Battery Isolator & ATV UTV Wiring Kit by KeyLine Chargers - Voltage Sensitive Relay - VSR - Image 5](https://images-na.ssl-images-amazon.com/images/I/71jVLx-JYbL.jpg)

## Customer Reviews

### ⭐ 







  
  
    This device can drain your starter battery if not connected correctly.
  

*by J***T on Reviewed in the United States on 2 September 2019*

After much research I purchased the unit based on the good reviews. I noticed when first connecting the unit there was an audible click like a relay, I thought nothing of it at the time assuming it just initialized the unit. Four days later I am left stranded because it drained the starter battery. I charged the battery for several hours and monitored the voltage, but when the charger was taken off there was a parasitic voltage drain pulling the battery back down by .01 volts about every 5 seconds or so.  While investigating further with the vehicle ignition off I noticed the very small almost non-visible red LED was always on which indicates the device is in CUT IN mode @ 13.3v, this would make sense normally because my now fully charged starter battery was over that. I disconnected the thin ground wire and heard the click again but now the starter battery voltage stayed steady at 13.15v with no drain. The device is supposed to CUT OUT at 12.8v so the alternator would direct power back to the starter battery, so I would assume when the vehicle was turned off it would CUT OUT so as not to drain the starter battery, this was not the case and it continued to drain the battery. Hopefully I can contact the seller directly for advice but as of now the only option is to install a manual isolator switch to power off this isolator. For reference I am an auto mechanic & electrician, all I can say is buyer beware.UPDATE 9/25: After contacting the vendor and reviewing my installation it was apparent that I had made a mistake. Yes this device could drain your starter battery if installed incorrectly, I corrected my installation and the unit seems to be functioning as it should.

### ⭐⭐⭐⭐⭐ 







  
  
    Work as advertised, good product, good price
  

*by A***R on Reviewed in the United States on 26 October 2016*

Purchased this to add dual battery capability to my Polaris Rzr.  Easy to install, good directions.  Only caveat, placing it where it says in the directions, double check to make sure the seat fits back in place before putting in the final screws.  If you dont, a good chance it will interfere with the seat.  It contained everything I need to make the installation simple and easy and not having to chase for any parts.

### ⭐⭐⭐⭐⭐ 







  
  
    Great product and you can ground direct to the chassis
  

*by S***A on Reviewed in the United States on 30 September 2016*

Great product worth wonderful instructions. One revision they can add to the diagram is that you don't necessarily need to run a cable directly from the battery to the auxiliary battery. If you are running yards in a battery to the rear of the vehicle you can just ground the auxiliary battery to the chassis and the system will still function properly. It's very efficient and charges perfectly. The quality of the kit for insulation was amazing. I would happily purchase another unit from them.

## 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.cy/products/212862537-140-amp-dual-battery-isolator-and-atv-utv-wiring-kit](https://www.desertcart.com.cy/products/212862537-140-amp-dual-battery-isolator-and-atv-utv-wiring-kit)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-22*