---
product_id: 51860456
title: "Step Up Voltage Converter 5V to 9V/12V USB to 2.1mm DC Booster Cable 1.2M (12V)"
brand: "uniquers"
price: "₩371"
currency: KRW
in_stock: false
reviews_count: 2
url: https://www.desertcart.kr/products/51860456-step-up-voltage-converter-5v-to-9v-12v-usb-to
store_origin: KR
region: South Korea
---

# 5V to 12V Boost 1.2m Length USB to 2.1mm DC Step Up Voltage Converter 5V to 9V/12V USB to 2.1mm DC Booster Cable 1.2M (12V)

**Brand:** uniquers
**Price:** ₩371
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Elevate Your Power Game!

## Quick Answers

- **What is this?** Step Up Voltage Converter 5V to 9V/12V USB to 2.1mm DC Booster Cable 1.2M (12V) by uniquers
- **How much does it cost?** ₩371 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/51860456-step-up-voltage-converter-5v-to-9v-12v-usb-to)

## Best For

- uniquers enthusiasts

## Why This Product

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

## Key Features

- • **Compact Design:** Lightweight and easy to carry.
- • **Extended Reach:** 1.2m length for flexible placement.
- • **Reliable Performance:** Ensures stable voltage conversion.
- • **Power Up Your Devices:** Transform 5V to 12V effortlessly!
- • **Versatile Compatibility:** Perfect for a range of USB-powered devices.

## Overview

The Step Up Voltage Converter seamlessly converts 5V USB power to 9V or 12V, featuring a generous 1.2m cable length for versatile use with various devices. Perfect for tech-savvy professionals on the go!

## Description

This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and it will give you a higher DC voltage! It's a handy way to power 12V powered devices with a center-positive 2.1mm DC barrel jack from a USB port.  These are rated at 500mA output, but you can go a little higher, we pulled 700mA and we got a little voltage droop but it worked fine. Probably best not to draw 700mA continuously though! Here's our measurements for various current draws when we set our bench supply to provide a steady 5V voltage 50mA (12.4V output), 150mA, 83% efficiency 100ma (12.4V), 290mA in, 86% efficiency 200ma (12.3V): 570mA in, 86% efficiency 300ma (12.2V): 870mA in, 84% efficiency 500ma (12.1V): 1500mA in, 81% efficiency 700ma (11.4V): 2140mA in, 75% efficiency So, overall there's a 85% efficiency at low current draw that drops do about 80% at high current use. There's also a 3 mA quiescent current. Note that often times the USB port voltage can droop too, and in addition you may have power losses with any thin or low quality cables with high resistivity!

## Features

- 5V to 12V
- Cable Length: ~1.2m / ~47"

## Images

![Step Up Voltage Converter 5V to 9V/12V USB to 2.1mm DC Booster Cable 1.2M (12V) - Image 1](https://m.media-amazon.com/images/I/51ecHVMm24L.jpg)

## Customer Reviews

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Three Stars
  

*by S***7 on Reviewed in the United States on November 20, 2017*

It worked powering my Sony A7 with one battery but not with another.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Quality Cable!
  

*by S***I on Reviewed in the United States on March 18, 2018*

I connect my fan to my battery bank everyday i work and it works flawlessly, really happy to have found this cable!

---

## 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.kr/products/51860456-step-up-voltage-converter-5v-to-9v-12v-usb-to](https://www.desertcart.kr/products/51860456-step-up-voltage-converter-5v-to-9v-12v-usb-to)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-17*