---
product_id: 571647749
title: "USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display"
brand: "farsense"
price: "$21.81"
currency: USD
in_stock: true
reviews_count: 9
category: "Farsense"
url: https://www.desertcart.us/products/571647749-usb-dc-5v-to-12v-step-up-power-cable-3ft
store_origin: US
region: United States of America
---

# Boosts 5V USB to 12V output Real-time voltage display Max 1A current for stable power USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display

**Brand:** farsense
**Price:** $21.81
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your USB Game — Boost Voltage, Boost Status!

## Quick Answers

- **What is this?** USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display by farsense
- **How much does it cost?** $21.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/571647749-usb-dc-5v-to-12v-step-up-power-cable-3ft)

## Best For

- farsense enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Built-in intelligent IC safeguards against over-current, over-voltage, and short circuits for worry-free use.
- • **Smart Switch Control:** Integrated on/off switch reduces wear and tear, giving you precise control and extending device lifespan.
- • **Premium Build Quality:** Pure copper core and flexible PVC sheath ensure fast conduction and durability with 10,000+ bend lifespan.
- • **Universal Compatibility:** Plug & play with multiple connectors supporting a wide range of 12V low-power gadgets—stay powered anywhere.
- • **Effortless Voltage Boost:** Seamlessly converts standard 5V USB power to a robust 12V output, powering your devices with confidence.

## Overview

The FARSENSE DC 5V to 12V USB Step Up Converter is a compact, high-efficiency power adapter designed to elevate your USB power source to 12V with up to 1A current. Featuring a built-in voltage display and switch, it offers real-time monitoring and easy control while protecting your devices with advanced safety circuits. Its durable construction and versatile connectors make it ideal for powering a variety of low-power 12V electronics, perfect for professionals seeking reliable, portable power solutions.

## Description

desertcart.com: FARSENSE USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display : Electronics

Review: Perfect adapter - Worked perfectly for what I needed! My none sign was corded and I wanted to make it usb to plug into a battery pack.
Review: Definitely works! - Worked as expected. Nice quality.

## Features

- 【Product Parameters】USB step up boost converter input voltage: DC 5V; output voltage: DC12V;max output current:1A;convert ratio: 80%-90%,weight: 45g;size:1.65inch x 0.86inch x 0.43inch,cable length:3ft,plug: 5.5x2.5mm (compatible with 5.5x2.1) and 3.5*1.35mm,polarity: inner positive,outer negative.Note: not support charging the laptop,no fast charging,no data transmission.Please be sure to check the voltage and current of the device before purchasing.
- 【With Switch and Voltage Display】The switch function can effectively reduce the wear and tear caused by plugging and unplugging the power interface.Easy to operate,the output can be turned on and off by lightly pressing the switch,and supports voltage display.
- 【Safe and Reliable】Built-in intelligent IC circuit and high-quality electronic component,Farsense USB to 12V adapter provides your devices perfect protection from over-current,over-voltage,over-temperature,short circuit.USB to 12v cable core is made of pure copper core,which has fast conduction and stable transmission performance.The sheath is made of PVC material,which is flexible and can withstand high-strength bending,bending life up to 10000+.
- 【Widely Usage】 Plug and play, usb 12v adapter is widely used in 12V low-power equipment such as usb-hub/mini fan/led pixel light/camera/tablet/router/mp3/toy/bluetooth speaker/video recorder/scanner/hard disk box/electronic clock/doorbell,etc.
- 【What you get 】1 x USB step up converter;1 x 3.5 * 1.35mm connector,10Gbps USB A female to USB C male adapter.We promise 30 days' money back and 24 hours customer service.Please contact us if you have any questions or problems.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CDTCXF8P |
| Best Sellers Rank | #129,077 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #487 in Power Converters |
| Customer Reviews | 4.4 4.4 out of 5 stars (147) |
| Date First Available | December 16, 2021 |
| Item Weight | 1.38 ounces |
| Item model number | UC12-D |
| Manufacturer | FARSENSE |
| Product Dimensions | 1.65 x 0.86 x 0.43 inches |

## Product Details

- **Brand:** FARSENSE
- **Compatible Devices:** Only capable of supplying power to 12V devices with power below 10W
- **Connector Type:** USB Type C, 3.5mm Audio Jack
- **Item dimensions L x W x H:** 1.65 x 0.86 x 0.43 inches
- **Specific Uses For Product:** Speaker

## Images

![USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display - Image 1](https://m.media-amazon.com/images/I/61FUv2GVaiL.jpg)

## Questions & Answers

**Q: Is this "center negative".**
A: No, center positive.

**Q: Which end of cable is 5 volts input and which is 12 volts output?**
A: 5 volts is the USB-A input side. The output is on the barrel plug and is 12V.

**Q: I have a 5v/3a power bank that I'm planning to use to power up a 12v 1.5a monitor. Will this work?**
A: The max output current for 12V is 1 amp. Your monitor requires 1.5 amps so technically the draw over the rating of the adapter and will not work.

**Q: Could this be used for audio equipment as a 12v trigger to activate (an amplifier) from another device that has USB but no trigger output?**
A: Probably will work. 
I used a 5v usb connector in my car to feed this device. It gave me a 12 v output to supply a radar detector.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect adapter
*by L***S on November 11, 2025*

Worked perfectly for what I needed! My none sign was corded and I wanted to make it usb to plug into a battery pack.

### ⭐⭐⭐⭐⭐ Definitely works!
*by J***Y on November 17, 2025*

Worked as expected. Nice quality.

### ⭐⭐⭐⭐⭐ This little unit does the job and is well regulated.
*by J***S on June 20, 2024*

I was quite happy to find that this small unit not only lives up to its specs (12 volts @ 1 amp) but also displays this on a digital display. It will start to drop just a bit once it hits around 980 mA and it Will drop out if you exceed 1 amp by even 100 mA. Also note that if yo run it close to the maximum, it will run quite warm. This didn't seem to effect its performance though. I was using it to power a portable DVD player. It ran needing about 670 mA to 800 mA depending on whether the volume was low or high and if I was using a Fire stick or not. It was pulling about 1.3 to 1.7 amps from the USB source which in this case was a battery bank. In my case, the included adapter didn't fit my player, but I didn't expect it to. You can find adapters on Amazon. Just be aware that this units polarity is the more common tip +. If you have a tip - device, you will need to get an adapter to reverse the polarity or cut the cable and do it yourself which will void the warranty. This small converter does work very well for extended periods of time and I've been very happy with it. Just be aware that it will not exceed 1 amp. It also won't exceed a 2.4 amp draw from your source. So, it's also quite efficient. At this price you really can't go wrong.

## Frequently Bought Together

- FARSENSE USB DC 5V to 12V Step Up Power Cable(3FT),USB C to DC 12V Adapter with DC Jack 5.5 x 2.5mm(Compatible with 5.5 x 2.1) and 3.5 x 1.35mm, Boost Converter Supports Voltage Display
- iGreely USB Voltage Step Up Converter - DC 5V to 12V, 3ft Cable with DC Jack 5.5 x 2.5mm or 5.5 x 2.1mm

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-13*