---
product_id: 254791521
title: "Wirthco 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator"
brand: "wirthco"
price: "€ 205.85"
currency: EUR
in_stock: true
reviews_count: 13
category: "Wirth Co"
url: https://www.desertcart.fi/products/254791521-wirthco-20092-battery-doctor-125-amp-150-amp-battery-isolator
store_origin: FI
region: Finland
---

# 150 Amp High Capacity IP62 Water Resistant Surge & Overcurrent Protection Wirthco 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator

**Brand:** wirthco
**Price:** € 205.85
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up smart, stay charged, and never get left behind!

## Quick Answers

- **What is this?** Wirthco 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator by wirthco
- **How much does it cost?** € 205.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/254791521-wirthco-20092-battery-doctor-125-amp-150-amp-battery-isolator)

## Best For

- wirthco enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Built-in surge and overcurrent protection safeguards your vehicle’s sensitive electronics from unexpected power spikes.
- • **Dual Battery Management:** Seamlessly charges your auxiliary battery without manual hassle, keeping all your power sources optimized and ready.
- • **Marine-Grade Durability:** IP62 water resistance means this isolator thrives even in wet, marine environments—no worries about corrosion or damage.
- • **User-Controlled Override:** Manual override option gives you full control to start your vehicle when you need it most—no compromises.
- • **Power Prioritization Master:** Automatically prioritizes charging your starting battery first, ensuring your vehicle fires up every time without fail.

## Overview

The Wirthco 20092 Battery Doctor is a robust 12V battery isolator delivering up to 150 amps with IP62 water resistance, ideal for marine and automotive use. It intelligently prioritizes charging your starting battery, automatically manages auxiliary battery charging, and protects your vehicle’s electronics with surge and overcurrent safeguards. Lightweight and compact, it offers manual override for ultimate control, making it a trusted choice for professionals who demand reliable power management on the go.

## Description

Buy Wirthco 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Battery adupter - Good product and useful
Review: هذا المنظم تستطيع أن تقوم بتركيببه لوحدك حيث أنه ينظم الشاحن بين البطارية الرئيسية والبطارية الإضافية وله ميزات أخرى

## Features

- Water Resistant (Ip62) - Suitable For Marine Use
- Priority Charging For Starting Battery
- Automatically Charges Auxiliary Battery
- Manual Override For Starting Battery
- Over Current And Surge Protected For Vehicles With Electronic Systems

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0058SGDFK |
| Amperage | 150 Amps |
| Best Sellers Rank | #9,394 in Automotive ( See Top 100 in Automotive ) #31 in Battery Chargers |
| Brand | WirthCo |
| Customer Reviews | 4.3 4.3 out of 5 stars (833) |
| Date First Available | 29 November 2012 |
| Item Weight | 431 g |
| Item model number | 1213.1241 |
| Manufacturer | Battery Doctor |
| Manufacturer Part Number | 010054200929 |
| Model | Battery Isolator, 125A |
| OEM Part Number | 20092 |
| Product Dimensions | 12.95 x 14.48 x 5.84 cm; 430.91 g |
| Voltage | 12 Volts |

## Images

![Wirthco 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator - Image 1](https://m.media-amazon.com/images/I/81msuQ3BxKL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can this be connected to a car battery then to a lithium battery pack for the purpose of keeping the lithium’s charged? Lithium for car amps**
A: No.  Lithium batterie$ need a $pecific charge controller. ($$$)

**Q: does the blue light stay on**
A: The blue light indicates that the primary battery is connected to the alternate battery and charging. This happens when (1) the vehicle's ignition is on and (2) the primary battery is being measured at 14V or higher.
Also, after turning off the ignition there is a delay of less than a minute before the batteries are isolated. The blue light will remain on until completed

**Q: i bought this three months ago.  the battery continues to drain.  always stays at 11.7 v.  i dont know if thing is broken or what.  what do i do?**
A: I would not continue to let the batteries drain to 11.7 Volts.    Never let you battery bank get lower then 11.9 Volts.  I would replace your battery isolator.

**Q: Can I use this with a 200 amp alternator or will it hurt the unit**
A: This unto will work fine. Your alternator may be rated for 200 amps. That rating is right before is burns up. There are other loads in your car that will take power while it is running. There is no way your alternator will push 200 amps to your battery.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Battery adupter
*by S***I on 23 January 2026*

Good product and useful

### ⭐⭐⭐⭐⭐ Review
*by R***D on 15 May 2024*

هذا المنظم تستطيع أن تقوم بتركيببه لوحدك حيث أنه ينظم الشاحن بين البطارية الرئيسية والبطارية الإضافية وله ميزات أخرى

### ⭐⭐⭐⭐⭐ Review
*by K***D on 21 November 2023*

ممتاز

## Frequently Bought Together

- WirthCo 1213.1241 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator , Black
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**Shop now:** [https://www.desertcart.fi/products/254791521-wirthco-20092-battery-doctor-125-amp-150-amp-battery-isolator](https://www.desertcart.fi/products/254791521-wirthco-20092-battery-doctor-125-amp-150-amp-battery-isolator)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-12*