---
product_id: 577389721
title: "12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat"
brand: "fbhdzvv"
price: "113 Lei"
currency: RON
in_stock: true
reviews_count: 9
category: "Fbhdzvv"
url: https://www.desertcart.ro/products/577389721-12v-to-3-3v-converter-dc-step-down-buck-voltage
store_origin: RO
region: Romania
---

# 3A output current 12V to 3.3V step-down conversion Multi-layer protection system 12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat

**Brand:** fbhdzvv
**Price:** 113 Lei
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat by fbhdzvv
- **How much does it cost?** 113 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/577389721-12v-to-3-3v-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 Safety First:** Integrated overvoltage, overcurrent, short circuit, and overtemperature protections keep your gear safe.
- • **Compact & Versatile Design:** Small footprint fits seamlessly in tight spaces—ideal for cars, trucks, boats, and motorcycles.
- • **Built to Brave the Elements:** Waterproof aluminum casing with silicone sealing ensures durability in harsh environments.
- • **High-Efficiency Energy Conversion:** Achieves up to 97% conversion efficiency, minimizing heat and maximizing battery life.
- • **Power Your Devices with Precision:** Delivers a stable 3.3V output at a robust 3A current, perfect for sensitive electronics.

## Overview

This 12V to 3.3V DC step-down buck converter delivers a reliable 3A output with up to 97% efficiency. Encased in waterproof aluminum with silicone sealing, it’s engineered for rugged use in vehicles and marine environments. Featuring intelligent microprocessor controls, it offers comprehensive protection against overvoltage, overcurrent, short circuits, and overheating, ensuring safe and stable power delivery for your sensitive electronics.

## Description

Input voltage: DC 12V Output voltage: DC 3.3v Output current: 3A Output power: 18W 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 3.3v step down buck converter

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
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.

## Features

- 12V- 3.3v dc converter power supply input voltage DC 12V; output voltage DC 3.3v; output current 3A
- DC-DC 12v to 3.3v 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 3.3v 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.
- 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 | B0C72C12NL |
| Best Sellers Rank | #118,851 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #455 in Power Converters |
| Customer Reviews | 4.3 4.3 out of 5 stars (124) |
| Date First Available | June 4, 2023 |
| Item Weight | 1.13 ounces |
| Item model number | 731905935509 |
| Manufacturer | FBHDZVV |
| Package Dimensions | 3.7 x 2.99 x 0.87 inches |

## Product Details

- **Brand:** FBHDZVV
- **Current Rating:** 3 Amps
- **Power Source:** Battery Powered
- **Specification Met:** CE, FCC, UL
- **UPC:** 731905935509

## Images

![12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 1](https://m.media-amazon.com/images/I/518JZPGa0cL.jpg)
![12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 2](https://m.media-amazon.com/images/I/613fTK0ji5L.jpg)
![12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 3](https://m.media-amazon.com/images/I/61KydQ-VZNL.jpg)
![12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 4](https://m.media-amazon.com/images/I/61StydGopJL.jpg)
![12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 5](https://m.media-amazon.com/images/I/71aesCOefdL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐ Item is as it is described
*by L***. on January 1, 2026*

Item was as described in description. No issues or concerns.

## Frequently Bought Together

- 12v to 3.3v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A Waterproof Car Converter Compatible with Led Light Car Truck Boat
- 12V to 5V DC Converter Car Power Voltage, Waterproof DC 6.3-22V 12V Step Down to DC 5V 3A 15W Voltage Regulator Buck Converter Power Supply Step-Down Module Compatible with Vehicle Car Truck Volt

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-06-25*