---
product_id: 534150606
title: "12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat"
brand: "fbhdzvv"
price: "224 kr"
currency: NOK
in_stock: true
reviews_count: 4
category: "Fbhdzvv"
url: https://www.desertcart.no/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage
store_origin: NO
region: Norway
---

# 3A output current 12.6W power output Multi-layer protection system 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat

**Brand:** fbhdzvv
**Price:** 224 kr
**Availability:** ✅ In Stock

## Summary

> 🔌 Power up smart, stay cool, and never miss a beat!

## Quick Answers

- **What is this?** 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat by fbhdzvv
- **How much does it cost?** 224 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage)

## Best For

- fbhdzvv enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Aluminum casing with silicone seal offers waterproof durability for any environment.
- • **Smart Safety Tech:** Integrated overvoltage, overcurrent, and thermal protection keeps your gear safe.
- • **Versatile Compatibility:** Perfect for car LEDs, dashcams, solar panels, and more—power your lifestyle seamlessly.
- • **Precision Power Delivery:** Stable 4.2V output from 12V input ensures your devices run flawlessly.
- • **High Efficiency, Low Heat:** Up to 97% conversion efficiency means less energy wasted and cooler operation.

## Overview

This 12V to 4.2V DC step-down buck converter delivers a reliable 3A current and 12.6W power output with up to 97% efficiency. Encased in waterproof aluminum with silicone sealing, it’s engineered for harsh conditions and features advanced protections against overvoltage, overcurrent, short circuits, and overheating. Ideal for automotive and marine LED lighting, dashcams, and other 4.2V devices, it ensures stable, safe, and efficient power conversion.

## Description

Input voltage: DC 12V Output voltage: DC 4.2V Output current: 3A Output power: 12.6W Case material:Aluminum Voltage protection: Input overvoltage and undervoltage protection Overcurrent protection: YES Output line compensation: YES Short circuit protection: YES Over temperature protection: YES Conversion efficiency: 90%~97% Wiring: Input: Red wire: input + Black wire: input - Output: Yellow wire: output + Black wire: output - Package include: 1 x DC 12v to 4.2v step down buck converter

Review: Spot on voltage - Compact design is like an inch long! Definitely simplifies installing in tight spots. Thought heat might be an issue but remains cool in my application
Review: Stay alert if you use this! - I usually buy the DROC brand. desertcart was out, so I ordered this. I installed it between a 4 volt LED outdoor security light and a 12 volt battery. After about 5 minutes, the unit actually got so hot, it melted ! Never again !

## Features

- 12V- 4.2V dc converter power supply input voltage DC 12V; output voltage DC 4.2V; output current 3A; output power 12.6W.
- DC-DC 12v to 4.2v car power converter intelligent microprocessing chip, over voltage, over current, over temperature, short circuit, it can be auto protection, and can work in normal condition when restored.
- 12V to 4.2V dc converter car power voltage aluminum case and silicone sealed design make it suitable for use in various harsh environments, high conversion efficiency, low heat generation, good heat dissipation, more durable.
- 12v to 4.2v DC step down buck converter compatible with car audio, car LED display, car DVD,hard disk player,dashcam,solar panel,LED strip lights,LED display,electric fan,camera,light.
- Attention: Please install according to the the label strictly, positive pole and nagative pole can't be reversed, or the module and device might be damaged, to assure this converter has the sufficient voltage and power pls make sure the voltage and power input is enough.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09ZT5TXJT |
| Best Sellers Rank | #109,115 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #430 in Power Converters |
| Brand | FBHDZVV |
| Brand Name | FBHDZVV |
| Current Rating | 3 A |
| Customer Reviews | 3.2 out of 5 stars 8 Reviews |
| Manufacturer | FBHDZVV |
| Model | 62ea7b5a-4d8b-4178-b3eb-b97a5901f1bf |
| Number of Items | 1 |
| Part Number | 176466 |
| Power Source | Corded Electric |
| Specification Met | CE, RoHS, UL |
| UPC | 731905685923 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** FBHDZVV
- **Power Source:** Corded Electric
- **Current Rating:** 3 Amps
- **UPC:** 731905685923
- **Manufacturer:** FBHDZVV

## Images

![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 1](https://m.media-amazon.com/images/I/51y-a56jDUL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 2](https://m.media-amazon.com/images/I/610BEypjftL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 3](https://m.media-amazon.com/images/I/61QHGSuhElL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 4](https://m.media-amazon.com/images/I/71aesCOefdL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 5](https://m.media-amazon.com/images/I/61KydQ-VZNL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Spot on voltage
*by G***R on August 27, 2024*

Compact design is like an inch long! Definitely simplifies installing in tight spots. Thought heat might be an issue but remains cool in my application

### ⭐ Stay alert if you use this!
*by S***N on August 6, 2024*

I usually buy the DROC brand. Amazon was out, so I ordered this. I installed it between a 4 volt LED outdoor security light and a 12 volt battery. After about 5 minutes, the unit actually got so hot, it melted ! Never again !

### ⭐⭐⭐⭐⭐ Buenas
*by J***N on December 6, 2024*

Buenos

## Frequently Bought Together

- 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat
- DROK Waterproof DC Buck Converter Voltage Regulator 8-22V to 3-15V 5V 12V 3A Adjustable Output Power Supply Transformer Step-Down Volt Module Board for Car Auto Vehicle Motor Regulated SR

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**Shop now:** [https://www.desertcart.no/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage](https://www.desertcart.no/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage)

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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-09-19*