---
product_id: 740180014
title: "BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU"
brand: "bestek"
price: "₩14422"
currency: KRW
in_stock: false
reviews_count: 5
url: https://www.desertcart.kr/products/740180014-bestek-dual-110v-ac-outlets-and-dual-usb-3-1a
store_origin: KR
region: South Korea
---

# BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU

**Brand:** bestek
**Price:** ₩14422
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU by bestek
- **How much does it cost?** ₩14422 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/740180014-bestek-dual-110v-ac-outlets-and-dual-usb-3-1a)

## Best For

- bestek enthusiasts

## Why This Product

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

## Description

Introduction: Whether you are at home, on the road, or any remote location, you can trust BESTEK portable and backup power solutions, for the traveler on-the-go to keep your important d

Review: Living in the middle of nowhere, I use battery powered lights from DeWalt for the time being, use this to plug in the charger during my drives to town. Worked flawlessly for weeks, but now it eats fuses. I swap a new one, charge starts up, but I suspect the adapter took a knock somewhere along the way jarring something loose which I may have to insulate/re solder, there's obviously a short in the unit somewhere now. Glad desertcart carries 10amp mini fuses by 60 for less than 4 out of Canadian tire. Good unit, useful and does the intended job, but treat it gently. *UPDATE* I was wrong,this unit works flawlessly,I now believe the issue was caused by a DeWalt battery charger. I am not an electrical engineer, but suspect that at times the battery in charger sends juice back to the outlet which sends that back to the car system and blows fuses. Not certain, but makes the most sense to a layman like myself. Running a 120w charger for my necessities has no issues with fuses at all. I would think this unit would have some protection for such behavior,but then again, I would rather pop the hood to swap a fuse than disassemble this unit. This unit does exactly what is promised, and I do apologize for any confusion I may have caused. Sturdy unit, would buy again.
Review: Muy útil para cuándo sales de viaje con tu familia

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004MDXS0U |
| Batteries Included | No |
| Batteries Required | No |
| Brand | BESTEK |
| Compatible Devices | Laptop |
| Connector Type | USB |
| Customer Reviews | 4.5 4.5 out of 5 stars (32,153) |
| Date First Available | 7 August 2012 |
| GSM frequencies | 60 Hz |
| Includes Rechargeable Battery | No |
| Item Dimensions LxWxH | 12.2 x 7.9 x 4.8 Centimeters |
| Item Weight | 408 g |
| Item model number | MRI3011BU |
| Manufacturer | BESTEK GROUP LTD |
| Model | MRI3011BU |
| Model Name | MRI3011BU |
| Model Year | 2014 |
| Number of Ports | 2 |
| Power Source | Corded Electric |
| Product Dimensions | 12.19 x 7.87 x 4.83 cm; 408.23 g |
| Total USB ports | 2 |
| Voltage | 12 Volts |
| Wattage | 300 Watts |

## Product Details

- **Brand:** BESTEK
- **Model Name:** MRI3011BU
- **Power Source:** Corded Electric
- **Voltage:** 12 Volts
- **Wattage:** 300 Watts

## Images

![BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU - Image 1](https://m.media-amazon.com/images/I/81kurNCSh9L.jpg)
![BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU - Image 2](https://m.media-amazon.com/images/I/718U6bioS7L.jpg)
![BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU - Image 3](https://m.media-amazon.com/images/I/71zC0pYudOL.jpg)
![BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU - Image 4](https://m.media-amazon.com/images/I/81FduLk48vL.jpg)
![BESTEK Dual 110V AC outlets and Dual USB 3.1A 300w power inverter car dc 12v to 110v ac inverter dc adapter laptop charger notebook adapter dc charger ac adapter usb charger MRI3011BU - Image 5](https://m.media-amazon.com/images/I/71zbOLahUmL.jpg)

## Questions & Answers

**Q: When I plug my laptop into it, and then play music through my laptop I get really bad cyclical sound ... is there a way to filter this out?**
A: I'm going with audio engineer dude on this one. But really what I wanted to address, is people saying it's due to it being a modified sine wave. That's not your issue. Laptops don't run on AC, they run DC, so first off sine type isn't an issue. Second, anything not straight off the main grid or a generator is a modified sine. There are better and worse, but if you're going DC to AC, it's modified sine. In all honesty though, if you're running a laptop off an inverter, the best thing would be to see if you can adapt straight from your original source to a laptop charger, bypassing the whole AC conversion.

**Q: The descriptions and photos here show TWO(2) AC Outlets, but some reviews say it only has ONE(1). Which is it?**
A: The unit that I received has 2 110v outlets and 2 usb ports. The unit was used on a recent trip to Texas and worked flawlessly.

**Q: Will this drain the car battery and does the car need to be running to use this?**
A: It depends.  If you have an ICE car with an internal combustion engine and a small "starter/ignition" battery, you won't want to run anything more than a few hours, maybe less if your battery is older or you've run it to dead a couple of times already.

But for my electric car, I've used a small inverter in the accessory jack to power small things for up to a week, and hardly noticed it.

**Q: Will this work with/charge a 15 inch Macbook Pro?**
A: Yes it works very well,  and runs quietly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***K on 6 April 2024*

Living in the middle of nowhere, I use battery powered lights from DeWalt for the time being, use this to plug in the charger during my drives to town. Worked flawlessly for weeks, but now it eats fuses. I swap a new one, charge starts up, but I suspect the adapter took a knock somewhere along the way jarring something loose which I may have to insulate/re solder, there's obviously a short in the unit somewhere now. Glad Amazon carries 10amp mini fuses by 60 for less than 4 out of Canadian tire. Good unit, useful and does the intended job, but treat it gently. *UPDATE* I was wrong,this unit works flawlessly,I now believe the issue was caused by a DeWalt battery charger. I am not an electrical engineer, but suspect that at times the battery in charger sends juice back to the outlet which sends that back to the car system and blows fuses. Not certain, but makes the most sense to a layman like myself. Running a 120w charger for my necessities has no issues with fuses at all. I would think this unit would have some protection for such behavior,but then again, I would rather pop the hood to swap a fuse than disassemble this unit. This unit does exactly what is promised, and I do apologize for any confusion I may have caused. Sturdy unit, would buy again.

### ⭐⭐⭐⭐⭐ Review
*by L***A on 18 July 2019*

Muy útil para cuándo sales de viaje con tu familia

### ⭐⭐⭐⭐⭐ Review
*by M***E on 1 December 2025*

Seem to do the job. Looks nice and solid. Well made.

## Frequently Bought Together

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-24*