---
product_id: 73045795
title: "28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm"
brand: "magnetbest"
price: "¥12738"
currency: JPY
in_stock: true
reviews_count: 4
category: "Magnetbest"
url: https://www.desertcart.jp/products/73045795-28v-3a-84w-ac-dc-adaptor-28v3a-switch-power-supply
store_origin: JP
region: Japan
---

# 28V output voltage 3A max current 5.5x2.5mm & 5.5x2.1mm dual plug compatibility 28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm

**Brand:** magnetbest
**Price:** ¥12738
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your gear smarter, faster, and safer — don’t get left in the slow lane!

## Quick Answers

- **What is this?** 28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm by magnetbest
- **How much does it cost?** ¥12738 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/73045795-28v-3a-84w-ac-dc-adaptor-28v3a-switch-power-supply)

## Best For

- magnetbest enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Ready:** Perfect drop-in replacement for adapters up to 3A without forced amperage
- • **Smart Safety First:** Built-in IC chip guards against short circuits, overloads, and overvoltage
- • **Power Up with Precision:** Stable 28V 3A output delivers a robust 84W for demanding devices
- • **Universal Plug Flexibility:** Dual DC plug sizes (5.5x2.5mm & 5.5x2.1mm) ensure seamless compatibility
- • **Energy Efficient & Long Lasting:** Advanced IC tech reduces standby power and extends adapter lifespan

## Overview

This 28V 3A 84W AC/DC power adapter features dual plug compatibility (5.5x2.5mm & 5.5x2.1mm), advanced IC chip protections, and energy-efficient design. Ideal for LED, digital, and optoelectronic devices, it offers reliable, high-output power with built-in safety and long service life, making it a versatile upgrade or replacement for professional-grade equipment.

## Description

High Quality 28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.5*2.5/2.1mm Specifications: * Input: AC 100-240V 50/60Hz 1.8A Max * Output: 28V 3A * Max Wattage: 84W * DC plug size: 5.5*2.5MM (Outer Diameter: 5.5mm . Inner Diameter: 2.5mm ) Compatible 5.5mmx2.1mm * Cable Length about: 1120cm * The adapters Connector: inside positive (+) . outside negative (-)v * With IC Chip: Short circuit protection, Overload protection , Over voltage protection * Perfect replacement for 1A/2A/ 3A as amperage isnt forced. (If your previous Adaptor was less than 3A then this will be a perfect replacement as amperage is NOT Forced) ​Product Features New IC solutions, more energy efficient, lower standby power consumption, longer life, widely used in LED products, digital products, optoelectronic products and other products, products, 100% load aging. Package included: 1 PCx 28V 3A Power Adapter ( No AC Cable )

Review: Added power for my device - I bought this adapter to use with a portable power station that came with an Ac adapter but its only 12v 3a and max watt input was only 36. This adapter allowed me to charge my station at 75 watts and that was a big difference in charge time. I was able to use this adapter with something that could handle 12v to 28v so make sure its compatible with the device your planning on using it with and dont use on anything that requires more than 3 amps.
Review: This is not 28 volt but 30 volt be careful can burn up your equipment - This is not 28 volt but 30 volt be careful it can burn up your equipment

## Features

- 28V 3A AC DC Adaptor
- POWER SUPPLY
- 28V 3A Power Supply

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F5G4CT4 |
| Customer Reviews | 3.8 3.8 out of 5 stars (10) |
| Date First Available | November 15, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.8 ounces |
| Item model number | 28V 3A |
| Manufacturer | magnetbest |
| Package Dimensions | 7 x 4 x 2 inches |

## Product Details

- **Amperage:** 3 Amps
- **Brand:** magnetbest
- **Color:** 28V3A
- **Compatible Devices:** PC
- **Connector Type:** barrel connector
- **Included Components:** 28V 3A Power Adapter
- **Input Voltage:** 240 Volts
- **Number of Items:** 1
- **Special Feature:** Short Circuit Protection
- **Wattage:** 84 watts

## Images

![28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm - Image 1](https://m.media-amazon.com/images/I/71-+-3Rae+L.jpg)
![28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm - Image 2](https://m.media-amazon.com/images/I/61mzULTHUkL.jpg)
![28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm - Image 3](https://m.media-amazon.com/images/I/519njFYk1kL.jpg)
![28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm - Image 4](https://m.media-amazon.com/images/I/618ClvZ4JSL.jpg)
![28V 3A 84W AC DC Adaptor 28V3A Switch Power Supply Adapter Charger DC 5.52.5/2.1mm - Image 5](https://m.media-amazon.com/images/I/611H3sWs-vL.jpg)

## Questions & Answers

**Q: Is the plug 2 or 3 prong?**
A: Customer Feedback,



The AC plug is a 2-prong but the advertised DC output is not 28 VDC as listed. The actual output on the power supply is 29.5. The  pictures online show 128 VDC but that is not what I received and was critical to what I was needing  - CAUTION!
The original ordered supplier was Magnetbest but what I received was from UpBright - again CAUTION!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Added power for my device
*by K***P on February 24, 2020*

I bought this adapter to use with a portable power station that came with an Ac adapter but its only 12v 3a and max watt input was only 36. This adapter allowed me to charge my station at 75 watts and that was a big difference in charge time. I was able to use this adapter with something that could handle 12v to 28v so make sure its compatible with the device your planning on using it with and dont use on anything that requires more than 3 amps.

### ⭐ This is not 28 volt but 30 volt be careful can burn up your equipment
*by B***L on June 5, 2022*

This is not 28 volt but 30 volt be careful it can burn up your equipment

### ⭐⭐⭐⭐ power output
*by D***D on June 9, 2019*

not much of dislike

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-30*