---
product_id: 81190515
title: "Westin 47-3800 Dual Battery System"
brand: "t-max"
price: "B/.188"
currency: PAB
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.pa/products/81190515-westin-47-3800-dual-battery-system
store_origin: PA
region: Panama
---

# Voltage regulation tech 250A power rating Built-in safety & manual override Westin 47-3800 Dual Battery System

**Brand:** t-max
**Price:** B/.188
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power your off-road freedom with confidence!

## Quick Answers

- **What is this?** Westin 47-3800 Dual Battery System by t-max
- **How much does it cost?** B/.188 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/81190515-westin-47-3800-dual-battery-system)

## Best For

- t-max enthusiasts

## Why This Product

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

## Key Features

- • **Safety First, Always:** Manual override and built-in protection keep your system secure under any condition.
- • **Compact & Lightweight:** At just 5 pounds and 13x13x4 inches, it fits seamlessly without adding bulk.
- • **Smart Voltage Control:** Advanced regulator balances voltage between batteries to maximize efficiency and battery life.
- • **Plug & Play Convenience:** Complete kit with all wiring, mounting hardware, and switches included for effortless installation.
- • **Unstoppable Power Backup:** Dual battery setup ensures you never run out of juice on your off-road adventures.

## Overview

The Westin 47-3800 Dual Battery System is a robust 250-amp rated kit designed for off-road enthusiasts who demand reliable power backup. It includes all necessary wiring, mounting hardware, and switches, features voltage regulation for balanced battery performance, and incorporates manual override plus safety protections—all in a compact, lightweight design.

## Description

T-Max Dual Battery System is designed to regulate the voltage across the series connected batteries and has a low voltage regulator that regulates the voltage across the lower battery of the series connection. It features display for monitoring the dual batteries. This dual battery system is linked for charging and is unlinked for discharging.

## Features

- HELPING HAND: Off-roading can take a serious toll on batteries, so carrying an extra is a safe bet. This system makes sure you take advantage of the available power.
- INCLUDED: All wiring, mounting hardware, and switches are included with this kit!
- RATING: This system is rated at 250 amps.
- REGULATOR: The dual battery system regulates the voltage across the connected batteries.
- SAFETY: The system has a manual override feature and built-in safety protection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Westin |
| Brand | T-Max |
| Item Weight | 5 pounds |
| Product Dimensions | 13 x 13 x 4 inches |
| Item model number | 47-3800 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 47-3800 |
| OEM Part Number | BCTC47-3800 |

## Images

![Westin 47-3800 Dual Battery System - Image 1](https://m.media-amazon.com/images/I/61bUK5xxuGL.jpg)
![Westin 47-3800 Dual Battery System - Image 2](https://m.media-amazon.com/images/I/717p5wS6LwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy install, Great kit, Highly Recommend.
*by M***S on October 7, 2019*

I had the Painless (PITA) system on my Jeep Wrangler. It was a bear to install, confusing, and failed on me. After I broke it, I found this one. Installed last night. Took all of 45 min. Works well. The display is a nice touch and provides the information I wanted to know. All in all, a great kit. Comes with EVERYTHING but the batteries. Well thought out. Would reccomend.

### ⭐ Absolutely no technical, warrenty or service support.
*by A***X on December 18, 2018*

I purchased this dual battery system for my 1990 Land Rover Defender to run accessories while overlanding and for running a webasto heater during the winter. After installing I noticed that my batteries were always equally low in the morning. I thought perhaps I had wired something wrong or I had a bad battery. So I had the checked and went over all my wiring. Everything checked out ok and I had the batteries charged. I went away for 3 days and came back to two dead batteries, one with a bad cell now. So I got a new battery hoping it was an overlooked bad cell. Nope the solinoid was draining power from both batteries rather than going dormant. So I contacted the manufacturer listed from amazon to try to get it sorted. I can not believe how awful customer service was! After being bounced around via rma I was told that I had to call in a different center for help. When I called and informed them I purchased from Amazon they told me I would have to deal with amazon. I asked if they were the warranty center and they said yes but they had “no idea what I ordered because I couldn’t give them an order number from their website”. I said I would gladly tell them what I ordered....long story slightly shorter, I returned the unit to amazon and will be using another manufacturer. Please note this was an/the “autorized warrenty center”. I was told (before she asked what my product was) that I had to send my “Warn Winch in for service with a note about what was wrong with it”. Wow!! When I told her what it really was she said she had never heard of it. What I learned, I also may be looking at other winch manufacturers also. I wanted to Lomé this product, I needed this product to work. I don’t look forward to removing my seat and wrestling with two big batteries to remove all the wiring I painstakingly installed for this product. Finally I wish I was able to find good customer service to fix what is likely a very simple issue and go about my day and on to the next project. Buyers beware, it may work, but if it doesn’t no one cares. Thankfully no one but Amazon, that’s why I trust purchasing just about anything here.

### ⭐⭐⭐⭐ Better than many battery isolators, but I am not sure if the Manual Link can handle 250 amps through the provided 6 AWG wire.
*by A***H on June 19, 2018*

Great design - need to confirm functionality.

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**Shop now:** [https://www.desertcart.com.pa/products/81190515-westin-47-3800-dual-battery-system](https://www.desertcart.com.pa/products/81190515-westin-47-3800-dual-battery-system)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-03-16*