---
product_id: 254791521
title: "20092 Battery Doctor 125 Amp/150 Amp Battery Isolator"
brand: "wirthco"
price: "€ 195.36"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/254791521-20092-battery-doctor-125-amp-150-amp-battery-isolator
store_origin: SK
region: Slovakia
---

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

**Brand:** wirthco
**Price:** € 195.36
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up with confidence—never get stranded again!

## Quick Answers

- **What is this?** 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator by wirthco
- **How much does it cost?** € 195.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/254791521-20092-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

- • **Manual Override Control:** Take charge with manual override for starting battery when you need it most.
- • **Marine-Grade Durability:** IP62 water resistance ensures reliable performance even in wet, marine environments.
- • **Smart Priority Charging:** Automatically prioritizes starting battery to keep your vehicle ready to go.
- • **Seamless Auxiliary Charging:** Effortlessly charges auxiliary batteries without manual intervention.
- • **Advanced Electronic Safeguards:** Protects sensitive vehicle electronics with overcurrent and surge protection.

## Overview

The 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator by WirthCo is a compact, water-resistant (IP62) device designed for marine and automotive use. It intelligently prioritizes charging your starting battery while automatically maintaining auxiliary batteries, featuring manual override and robust overcurrent and surge protection to safeguard modern electronic systems.

## Description

20092 Battery Doctor 125 Amp/150 Amp Battery Isolator

## 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 |
|---------------|-------|
| Manufacturer | Battery Doctor |
| Brand | WirthCo |
| Model | Battery Isolator, 125A |
| Product Dimensions | 12.95 x 14.48 x 5.84 cm; 430.91 g |
| Item model number | 1213.1241 |
| Manufacturer Part Number | 010054200929 |
| OEM Part Number | 20092 |
| Amperage | 150 Amps |
| Voltage | 12 Volts |
| Item Weight | 431 g |

## Images

![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.

## Frequently Bought Together

- WirthCo 1213.1241 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator , Black
- TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing
- Hamolar 3 Pack Car Audio 150 Amp Resettable Fuse Circuit Breaker Car Protect for Audio System Fuse 12-48V DC for Car Audio Amps Overload Protection Fuse

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**Shop now:** [https://www.desertcart.sk/products/254791521-20092-battery-doctor-125-amp-150-amp-battery-isolator](https://www.desertcart.sk/products/254791521-20092-battery-doctor-125-amp-150-amp-battery-isolator)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-26*