---
product_id: 172147786
title: "Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck"
brand: "keenso"
price: "₨17944"
currency: LKR
in_stock: true
reviews_count: 7
category: "Keenso"
url: https://www.desertcart.lk/products/172147786-keenso-140-amp-dual-battery-isolator-vsr-voltage-sensitive-relay
store_origin: LK
region: Sri Lanka
---

# 140A high current capacity Automatic dual battery charging Flexible panel or surface mount Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck

**Brand:** keenso
**Price:** ₨17944
**Availability:** ✅ In Stock

## Summary

> 🔋 Keep your dual-battery system charged and ready—because downtime is not an option!

## Quick Answers

- **What is this?** Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck by keenso
- **How much does it cost?** ₨17944 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/172147786-keenso-140-amp-dual-battery-isolator-vsr-voltage-sensitive-relay)

## Best For

- keenso enthusiasts

## Why This Product

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

## Key Features

- • **Backed by Confidence:** Includes a money-back guarantee and responsive customer support to keep your adventures worry-free.
- • **Seamless Installation:** Versatile mounting options (panel or surface) with screw connectors make setup quick and hassle-free.
- • **Heavy-Duty Reliability:** Built with a premium nylon shell and rated for 140 amps, designed to withstand abrasion and aging for long-term use.
- • **Power Up Without Pause:** Ensures your secondary battery charges only when the starter battery is ready, so you never get stranded.
- • **Voltage-Smart Operation:** Automatically engages at 13.3V and disengages at 12.8V to protect your batteries and optimize charging.

## Overview

The Keenso 140 Amp Dual Battery Isolator is a robust voltage sensitive relay designed for vehicles with dual battery setups. It automatically manages charging between your starter and auxiliary batteries, supporting up to 140 amps with minimal voltage drop. Its durable nylon casing and flexible mounting options make it ideal for RVs, boats, trucks, and camping vehicles, ensuring reliable power management and extended battery life.

## Description

Buy Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck: Battery Switches - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works great - Does what it says, it cuts the power from my second battery and I do like the fact that it can be used manually. It turns off around 12.8 so it works for me.
Review: Not as Advertised - This power isolator shows to have extra wires that you can tie off of for ignition protection and status lights, the two I ordered only has one black ground lead and no other wires. The instructions in the box show the other wires but the ones I received did not. Also, when active, the isolators do not actually isolate the two batteries. It combines the two batteries even when the vehicle is off and there is no charge from engine. If one battery is dead, then the isolator does not even see it and will not charge the dead battery. defeating the purpose. Just need to either get two correct models that I paid for and that was advertised on both desertcart and the box they came in or need to get money back.

## Features

- ☆Great For Dual-Battery Vehicle: A 140 amp voltage sensitive relay (VSR) is the to ensure you can always get your dual-battery vehicle started. Once your main starter battery is sufficiently charged, it will begin charging the second battery
- ☆ 140 Amp Dual Battery Isolator: The dual battery isolator is all you need to battery systems. Dimensions fits Heavy Duty Modular Box Series (BF43x) and Battery Switch, matching mainstream products in market
- ☆ Easy Installation: or panel mount options provides flexibility when installing. No voltage drops comparing to battery isolator diodes (0.6V). Combine / Open Voltage: DC 13.3V / 12.8V
- ☆ Premium Quality: Made of premium nylon shell material, this vsr voltage sensitive relay is sturdy, not easy to aging and abrasion resistant, to ensure maximum strength and durability for long lasting usage
- ☆ What You Will Get: We stand behind all of our them with a product guarantee and promise to give you the best in customer care! If you have any issue about the item, please us by e-mail, we will try our best within 24 hours to reply

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07R9T7L5J |
| Best Sellers Rank | #2,570,858 in Automotive ( See Top 100 in Automotive ) #1,487 in Automotive Replacement Battery Switches |
| Brand | Keenso |
| Coil Voltage | 12 Volts |
| Connector Type | Screw |
| Contact Current Rating | 140 Amps |
| Contact Type | Normally Open |
| Current Rating | 140 Amps |
| Date First Available | April 28, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.6 ounces |
| Manufacturer | Keenso |
| Minimum Switching Voltage | 12.8 Volts (DC) |
| Mounting Type | Panel Mount, Surface Mount |
| Operation Mode | Automatic |
| Product Dimensions | 2.76 x 2.76 x 2.76 inches |
| Specification Met | Ip65, Warranty, Money Back Guarantee |
| UPC | 753874094834 |

## Product Details

- **Brand:** Keenso
- **Connector Type:** Screw
- **Contact Type:** Normally Open
- **Current Rating:** 140 Amps
- **Mounting Type:** Panel Mount, Surface Mount

## Images

![Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck - Image 1](https://m.media-amazon.com/images/I/310bKCGd6jL.jpg)
![Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck - Image 2](https://m.media-amazon.com/images/I/315UPpO1Y5L.jpg)
![Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck - Image 3](https://m.media-amazon.com/images/I/411ekXybmqL.jpg)
![Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck - Image 4](https://m.media-amazon.com/images/I/416ez+z7z8L.jpg)
![Keenso 140 Amp Dual Battery Isolator, VSR Voltage Sensitive Relay, Automatic Charging Relay for RV, Boat, Camping, Marine, Auto, Truck - Image 5](https://m.media-amazon.com/images/I/41AX01XcdaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by B***5 on March 22, 2020*

Does what it says, it cuts the power from my second battery and I do like the fact that it can be used manually. It turns off around 12.8 so it works for me.

### ⭐⭐ Not as Advertised
*by K***K on August 16, 2025*

This power isolator shows to have extra wires that you can tie off of for ignition protection and status lights, the two I ordered only has one black ground lead and no other wires. The instructions in the box show the other wires but the ones I received did not. Also, when active, the isolators do not actually isolate the two batteries. It combines the two batteries even when the vehicle is off and there is no charge from engine. If one battery is dead, then the isolator does not even see it and will not charge the dead battery. defeating the purpose. Just need to either get two correct models that I paid for and that was advertised on both amazon and the box they came in or need to get money back.

### ⭐⭐⭐⭐⭐ Review
*by M***D on August 21, 2019*

Very happy with the function of this VSR. Installed it in my 18’ fishing boat to charge the trolling motor battery from the main. Was on a week long trip and never had to remove the battery to try to charge it off the generator. I also installed an isolator switch to allow me to completely isolate from the main. Planning on buying another one to split my “main” battery into to a starter and house battery in the future.

---

## 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.lk/products/172147786-keenso-140-amp-dual-battery-isolator-vsr-voltage-sensitive-relay](https://www.desertcart.lk/products/172147786-keenso-140-amp-dual-battery-isolator-vsr-voltage-sensitive-relay)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-28*