---
product_id: 456922781
title: "12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat"
brand: "fbhdzvv"
price: "€ 12.59"
currency: EUR
in_stock: true
reviews_count: 9
category: "Fbhdzvv"
url: https://www.desertcart.ie/products/456922781-12v-to-3-7v-converter-dc-step-down-buck-voltage
store_origin: IE
region: Ireland
---

# 12V input Waterproof 3V output 12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat

**Brand:** fbhdzvv
**Price:** € 12.59
**Availability:** ✅ In Stock

## Summary

> Transform Your Power Game! ⚡

## Quick Answers

- **What is this?** 12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat by fbhdzvv
- **How much does it cost?** € 12.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/456922781-12v-to-3-7v-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

- • **🔥 High Efficiency:** Delivers 9W of power with low heat generation for optimal performance.
- • **🌧️ Rugged Design:** Aluminum case and silicone sealing ensure durability in harsh environments.
- • **⚙️ Easy Installation:** Follow the clear labeling to ensure a hassle-free setup.
- • **🔒 Intelligent Protection:** Equipped with an intelligent microprocessing chip for over-voltage, over-current, and short circuit protection.
- • **🚗 Versatile Compatibility:** Perfect for car audio, LED displays, dashcams, and more.

## Overview

The 12V to 3V Converter is a robust DC step-down voltage regulator designed for various applications, including automotive and marine use. With a maximum output of 3A and 9W, it features intelligent protection mechanisms and a waterproof design, making it ideal for harsh conditions.

## Description

Input voltage: DC 12V Output voltage: DC 3.7V Output current: 3A Output power: 11.1W 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 3.7v 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- 3.7V dc converter power supply input voltage DC 12V; output voltage DC 3.7V; output current 3A; output power 11.1A.
- DC-DC 12v to 3.7v 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 3.7V 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 3.7v 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 | B09ZTC5P5W |
| Best Sellers Rank | #179,141 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #736 in Power Converters |
| Brand | FBHDZVV |
| Brand Name | FBHDZVV |
| Current Rating | 3 Amps |
| Customer Reviews | 4.4 out of 5 stars 130 Reviews |
| Manufacturer | FBHDZVV |
| Minimum Frequency | 50 Hz |
| Model | FBHDZVV-12v-3.7v |
| Mounting Type | Portable |
| Number of Items | 1 |
| Part Number | 176467 |
| Power Source | Corded Electric |
| Specification Met | CE, FCC, UL |
| UPC | 731905685930 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** FBHDZVV
- **Power Source:** Corded Electric
- **Mounting Type:** Portable
- **Current Rating:** 3 Amps
- **Specification Met:** CE, FCC, UL

## Images

![12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 1](https://m.media-amazon.com/images/I/51vqAastw8L.jpg)
![12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 2](https://m.media-amazon.com/images/I/61d0XX+73SL.jpg)
![12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 3](https://m.media-amazon.com/images/I/61pUugX8S8L.jpg)
![12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 4](https://m.media-amazon.com/images/I/71aesCOefdL.jpg)
![12v to 3.7v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 11.1W 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 3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 9W Waterproof Car Converter Compatible with Led Light Car Truck Boat
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**Shop now:** [https://www.desertcart.ie/products/456922781-12v-to-3-7v-converter-dc-step-down-buck-voltage](https://www.desertcart.ie/products/456922781-12v-to-3-7v-converter-dc-step-down-buck-voltage)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-05-24*