---
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: "S/.69"
currency: PEN
in_stock: true
reviews_count: 9
category: "Fbhdzvv"
url: https://www.desertcart.pe/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage
store_origin: PE
region: Peru
---

# 12V Input 4.2V Output Waterproof Design 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:** S/.69
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Adventure with Confidence!

## 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?** S/.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/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

- • **Smart Protection:** Equipped with intelligent microprocessing for over-voltage, over-current, and short circuit protection.
- • **Efficient Cooling:** High conversion efficiency with low heat generation for long-lasting use.
- • **Rugged Reliability:** Waterproof and durable design ensures performance in harsh environments.
- • **Powerful Performance:** Delivers a robust 3A output for all your devices.
- • **Versatile Compatibility:** Perfect for car audio, LED displays, and more—power up your ride!

## Overview

The 12V to 4.2V Converter is a high-performance DC step-down voltage regulator designed for various applications, including car audio and LED displays. With a robust output of 3A and a waterproof design, it ensures reliable operation in challenging environments while providing smart protection features to safeguard your devices.

## 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: Enough juice for Tx on a Baofeng UV-5R radio - It is working great powering a Baofeg UV-5R radio from a 12 Volt power source. This allows me to have the radio permanently powered without worrying of the traditional lithium battery that requires constant recharge. It has enough power to supply current for transmit mode.
Review: Great product,small so can be mounted near or on your motorcycle battery - Wired it to use with my heated motorcycle jacket seems to work fine.Wired directly to my battery with on/off switch and a 7.5amp fuse. Product is good to use with limited space near or on your battery

## 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 | #264,769 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,112 in Power Converters |
| Brand | FBHDZVV |
| Brand Name | FBHDZVV |
| Current Rating | 3 Amps |
| Customer Reviews | 4.4 out of 5 stars 129 Reviews |
| Manufacturer | FBHDZVV |
| Model | 62ea7b5a-4d8b-4178-b3eb-b97a5901f1bf |
| Part Number | 176466 |
| Power Source | Dc Power Supply |
| Specification Met | CE, RoHS, UL |
| UPC | 731905685923 |

## 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

### ⭐⭐⭐⭐⭐ Enough juice for Tx on a Baofeng UV-5R radio
*by J***O on April 25, 2025*

It is working great powering a Baofeg UV-5R radio from a 12 Volt power source. This allows me to have the radio permanently powered without worrying of the traditional lithium battery that requires constant recharge. It has enough power to supply current for transmit mode.

### ⭐⭐⭐⭐⭐ Great product,small so can be mounted near or on your motorcycle battery
*by S***I on July 2, 2025*

Wired it to use with my heated motorcycle jacket seems to work fine.Wired directly to my battery with on/off switch and a 7.5amp fuse. Product is good to use with limited space near or on your battery

### ⭐⭐⭐⭐⭐ WORKS GREAT!
*by V***C on April 28, 2025*

I use this reducer on my 2000 ZX 6R Kawasaki to make the CDI box function property with my cheap Chinese aftermarket ignition. It is a great inexpensive way to replace the overpriced factory OEM ignition. I even tested it with a very sensitive voltmeter and it is exactly on point as advertise 7.4.

## 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

---

## 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.pe/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage](https://www.desertcart.pe/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage)

---

*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-06-03*