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Eligible for Return, Refund or Replacement within 30 days of receipt

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Resolutions	Eligible for refund or replacement
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BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter BESTEK.

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BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

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Purchase options and add-ons

Brand	BESTEK
Recommended Uses For Product	Vehicle
Power Source	DC
Wattage	300 watts
Model Name	MRI3011BU

About this item

BESTEK Advantage: America's leading power inverter brand. Provides 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports
Fast Charging: two 110V AC outlets for charging larger devices such as laptops and tablets, 2 USB charging ports (0-2.4A) for powering USB compatible devices, a good choice as requisite car accessories
Ultra Compact and Lightweight: iPhone-sized design ideal for use on vacations, work trips, and camping. 24 inch cigarette lighter plug makes the power inverter can be plugged into almost any vehicle
Multi-Protection: built-in 40 amps fuse to protect your device. Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting
Durable metal housing provides advanced protection from drops and bumps.Smart cooling fan system makes the car power inverter very silent when operating,and the fan runs faster when the device gets warmer or output power exceeds 70W. 60-Months Warranty
【60 Months Warranty】: ETL certified products to ensure safety and quality. If you have any questions or are dissatisfied with your purchase, BESTEK will provide 24 hours x 7 days technical and friendly customer service support, as well as a 60-month product replacement warranty.

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BESTEK 300W Car Power Inverter - DC 12V to 110V AC Converter, Fast Car Charger Adapter with 30W USB-C/18W Quick Charge/Dual 110V AC Outlet, Car Plug Adapter Outlet for Laptop
$32.99
(1,475)
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	This Item BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter	Recommendations BESTEK 300W Car Power Inverter, with USB-C PD 20W, DC 12V to 110V AC Car Plug Adapter Outlet Converter with QC3.0 USB Ports Multi-Protection Car Charger Power Inverter for Vehicles	dummy BESTEK 300W Car Power Inverter, DC 12V to 110V Car Inverter with 2 AC Outlets and 3.4A Dual USB Ports, Car Plug Adapter Outlet Converter Red	dummy BESTEK 300W Car Power Inverter - DC 12V to 110V AC Converter, Fast Car Charger Adapter with 30W USB-C/18W Quick Charge/Dual 110V AC Outlet, Car Plug Adapter Outlet for Laptop	dummy 150W Power Inverter 12V DC to 110V AC Car Plug Adapter Outlet Converter with 3.1A Dual USB AC car Charger for Laptop Computer Black	dummy BMK 200W Car Power Inverter Newly Car Plug adapter Outlet Charger DC 12V to 110V Car Inverter with 1.2A&2.4A USB, 1 QC3.0 USB and 1 Type C Ports black
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$29.99	$31.99	$29.99	$32.99	-28% $17.99 List: $24.99	-22% $27.99 List: $35.99
Delivery	Get it as soon as Monday, Jul 29	Get it as soon as Monday, Jul 29	Get it as soon as Monday, Jul 29	Get it as soon as Monday, Jul 29	Get it as soon as Monday, Jul 29	Get it as soon as Wednesday, Jul 31
Customer Ratings	4.532,186	4.41,475	4.3145	4.41,475	4.56,831	4.42,105
Cord length	4.4	4.0	4.4	4.0	4.0	4.2
Noise level	4.4	3.8	—	3.8	4.0	4.4
Value for money	—	3.9	4.2	3.9	3.8	4.3
Charging power	4.3	—	4.1	—	4.2	4.8
Quality of material	4.4	4.3	—	4.3	—	—
Sold By	BESTEK.	BESTEK.	BESTEK.	BESTEK.	Pisfau	BMK BLUEMICKEY
power outlets	4	—	4	—	3	6
output voltage	110 volts	110 volts	110 volts	110 volts	110 volts	110 volts
input voltage	12 volts	12 volts	12 volts	12 volts	12 volts	12 volts
output power	300 watts	300 watts	300 watts	300 watts	—	200 watts
weight	1.16 pounds	—	—	—	8 ounces	0.39 pounds

Product Description


USA BASED SUPPORT BESTEK provide 5-year product repair policy and our fast-response service will solve all your inquiry and problem, please don't hesitate to ask Amazon.	2 USB-A 2AC PLUG 2 USB-A provide a stable 0-2.4A 2 AC outlet, power inverter makes the DC 12V step-up through the transformer, and then converters to AC110V, 60Hz correction wave output.	Widely Compatibility Great suitable for electric device in the car, for iPhone, laptop, breast pump, CPAPmachine, nebullizer, game console etc. The input voltage is 12V, when the AC output is overload of 350W to 400W, the loading time of 300W to 330W is more than 60 seconds, and the loading time of 330W to 360W is more than 20 senconds.

BESTEK Advantage

America's leading power inverter brand. Provides 300 watts continuous DC to AC power and 700 watts of peak power

BESTEK 300W Car Power Inverter (Red)

BESTEK Power Inverter with 2 USB ports and 2 AC outlet, only for DC 12V and Car, not applied for DC 24V and airplane use. For charging your iPad, please use the 2.1A USB port and keep the other USB port free. It's normal for the inverter to become warm to the touch while you are using it, avoid placing the inverter in direct sunlight or next to heat-sensitive materials. Do not use to power high power electric devices such as hair dryers, electric heaters, which might blow a fuse.

Isolation Voltage Protection
Dual-USB 4.2A Output
Multi-Protection
Aluminum Alloy Housing
Durable Cigarette Lighter
Top Speed Charging


Aluminium Alloy Housing BESTEK power inverter outshell is made of Aluminium alloy, solid and durable,can stand up to all kinds of severe environment, protect the internal components.	Smart Cooling Fan Smart cooling fan system makes the car power inverter very silent when operating,and the fan runs faster when the device gets warmer or output power exceeds 70W.	Isolation Voltage Protection Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting, overloads, and overcharging.	Quick USB Charging With 2 Smart USB charging port, can intelligently detect your devices and deliver best matched charging current to get fast charging speed.Auto 0-2.4A each port, total 4.8A output.


Durable Cigarette Lighter The lighter socket is resistant to up to 5000 times of insertion and extraction.Enjoy a safe,reliable charger on the go.Secure plug-in buckle design with stable current, and built-in usb charging ports.	Top Speed Charging Made of high quality materials which provides high-speed charging from your car. 24 inch cigarette lighter plug makes the power inverter can be plugged into almost any vehicle.	Power On LED Strip Lights It can power on your LED Lights anywhere for Christmas and other festivals to create a great atmosphere.	BESTEK Advantage America's leading power inverter brand. Provides 300 watts continuous DC to AC power and 700 watts of peak power.


	BESTEK 300W Pure Sine Wave Power Inverter (Black)	BESTEK 300W Car Power Inverter, with USB-C PD 20W, DC 12V to 110V AC Car Plug	BESTEK 500W Pure Sine Wave Power Inverter (Red)	BESTEK 300W PSW Power Inverter (Red)	BESTEK 150W Power Inverter (Blue)	BESTEK 75W Power Inverter (Black and silver)

Customer Reviews	5,190	1,475	2,863	581	9,823	4,369
Price	$49.99	$31.99	$69.99	$53.99	$17.76	$23.39
Color	Black	Red	Red	Red	Blue	Black and silver
Power	300W	300W	500W	300W	150W	75W
isolation voltage protection	✓	✓	✓	✓	✓	✓
USB Port	4.2A Dual USB	4.2A Dual USB	4.2A Dual USB	4.8A Dual USB	4.2A Dual USB	3.1A Dual USB
Material	Aluminum Alloy Housing	Aluminum Alloy Housing	Aluminum Alloy Housing	Aluminum Alloy Housing	Aluminum Alloy Housing	Aluminum Alloy Housing
Speed charging	✓	✓	✓	✓	✓	✓
Dimension	8.1 x 5.3 x 2.6 inches	8.1 x 5.3 x 2.6 inch	8.7 x 4.3 x 2.4 inches	7.3 x4.3 x 2.5 inches	5.0 x 4.0 x 2.0 inches	5.5 x 2.4 x 1.6 inches
Feature	Smart cooling fan, ETL listed	Smart Cooling fan	Smart cooling fan	Smart cooling fan	Smart cooling fan, ETL listed	Smart cooling fan, ETL listed

From the brand

BESTEK Essential Car Inverter
BESTEK High Power Inverter

Product information

Product Dimensions

4.8 x 3.1 x 1.9 inches

Item Weight

14.4 ounces

ASIN

B004MDXS0U

Item model number

MRI3011BU

Customer Reviews

4.5 32,186 ratings

4.5 out of 5 stars

Best Sellers Rank

#321 in Automotive (See Top 100 in Automotive)
#4 in Power Inverters

Is Discontinued By Manufacturer

Date First Available

February 5, 2011

Manufacturer

BESTEK

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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What's in the box

1 x 300W Power Inverter1 x User Manual

Looking for specific info?

Product guides and documents

User Guide (PDF)

Inspiration from this brand

BESTEK GLOBAL LLC Visit the Store on Amazon

Brands in this category on Amazon

Customer reviews

4.5 out of 5

32,186 global ratings

How customer reviews and ratings work

Customers say

Customers like the charging capabilities of the power inverter. They say it's great for charging cell phones and computers without needing to juggle extra adapters. They also appreciate the versatility and compact size. Customers like that it works great and takes up very little space. They appreciate the quality and value of the product. However, some customers have mixed opinions on noise and power.

AI-generated from the text of customer reviews

Select to learn more

Performance Quality Charging Value Size Versatility Noise Power

3,870 customers mention "Performance"3,279 positive591 negative

Customers like the performance of the power inverter. They say it works well, is lightweight, and built solid. Some customers mention that it's very helpful and perfect for their needs. They also say that it works as it should, has fast charging, and is a great addition to an older vehicle that doesn't have built-in power.

"...I used it to charge devices while camping. It works great plugged into a jackery as well...." Read more

"...keep my laptop and cell phone charged on a long road trip, and it worked like a dream!..." Read more

"...cheap square wave inverters come in handy, and this one has pretty good performance, and even survived brief polarity reversal..." Read more

"This works great. It is smaller than I thought it would be. Fits nicely under my radio in the SUV. It has a light that shows you when it’s on...." Read more

1,191 customers mention "Quality"930 positive261 negative

Customers like the quality of the power inverter. They mention it's well-made, solid, and has held up over time. The durable metal housing has a small LED light that lets them know it'll be getting power. The cord is well- made and the 12V plug connects firmly. The unit itself is top quality, excellent, and dependable. It looks well put together inside.

"...Fast charging. Excellent quality. I gave mine to a homeless girl. I will be buying another one." Read more

"Very nice inverter! UL listed and very quiet!..." Read more

"...I love it!It works well, it’s sturdy, and made with what feels like quality materials. Great price point also...." Read more

"...Includes two USB portsAnd the cons are:The fan does not kick-in only when there's a heavy load, it's always on when the inverter..." Read more

840 customers mention "Charging"686 positive154 negative

Customers like the charging of the power inverter. For example, they say it's great for charging phones, ear buds, and other devices. Some mention that it'll charge their phone and kids phone at the same time. That said, most are happy with the charging capabilities.

"...Fast charging. Excellent quality. I gave mine to a homeless girl. I will be buying another one." Read more

"...The USB-C plug provides fast-charging power for my phone whereas the USB plugs and wireless pad built into the vehicle are only regular charge..." Read more

"...terminals, and you have yourself a portable power supply that can be recharged quickly, and be deep cycled...." Read more

"...It's quiet and powerful. It also charges phones well." Read more

652 customers mention "Value"561 positive91 negative

Customers like the value of the power inverter. They say it's a good investment for the money, and works well for the price. Some customers also mention that it gives more output for less money.

"...Provides plenty of power at a very low price 300WattsIt's a relatively small for the wattage provides..." Read more

"...Great price point also.I used to have to go home and chart for 2 hours after I was off the clock. Not anymore though!..." Read more

"Really worth the cost to be to power things up while out camping from the car." Read more

"Great value. Bought this for my VW Jetta. No issues so far, recently used this on a very long trip out of town." Read more

613 customers mention "Size"567 positive46 negative

Customers like the size of the power inverter. They say it's compact, easy to use, and delivers on performance. Some customers say it fits in their center console compartment or the space under it. They also say it is one of the smallest inverters of this type that they have ever used. Customers also say that the outlets are a little tight so the plug doesn't come unplugged if it gets knocked.

"...that I had to check to see if it was on, and it's also one of the smallest inverters of this type that I've ever owned and very lightweight, so it..." Read more

"...Provides plenty of power at a very low price 300WattsIt's a relatively small for the wattage provides..." Read more

"This works great. It is smaller than I thought it would be. Fits nicely under my radio in the SUV. It has a light that shows you when it’s on...." Read more

"Fits in a police car and is sufficient to run some of the electronics and comm equipment." Read more

350 customers mention "Versatility"350 positive0 negative

Customers like the versatility of the power inverter. They say it's great for road trips, charging cell phones and computers, and is a good travel tool. Some say it makes road trips much better, and it'll be great on outdoor adventures and during any sort of grid-down disaster.

"...It has an easy off and on switch. It’s great for camping. The cable length is great but not long enough to leave a car...." Read more

"...my phone and kids phone and laptop all at the same time... great for road trips" Read more

"...It's made our travel experiences smoother and more comfortable, knowing we can power what we need, when we need it...." Read more

"This has been very help ful for travel and work, used it on 15 hour road trip and able to charge 2 laptops continuously and one phone device...." Read more

1,117 customers mention "Noise"583 positive534 negative

Customers are mixed about the noise the power inverter makes. Some mention that the fan is so quiet that it never woke them up, while others say that it produces a loud whistling or whirring sound the second it is turned on.

"...The cooling fan was almost completely silent to the point that I had to check to see if it was on, and it's also one of the smallest inverters of..." Read more

"...there's a heavy load, it's always on when the inverter is on, and it is loud..." Read more

"Very nice inverter! UL listed and very quiet!..." Read more

"...this one in a brand new Peterbilt semi truck and the buzzing through the speakers is so bad it's basically unlistenable...." Read more

470 customers mention "Power"296 positive174 negative

Customers are mixed about the power of the inverter. Some mention that it provides plenty of power at a very low price, while others say that the source you are using does not have enough wattage to charge the laptop. Some say that without the fan on, the 3-prong sockets don't deliver any power, and the inverter seems to cut off power after a few 2 minutes when the voltage drops below 12v.

"...It works great plugged into a jackery as well. It somehow pulls less energy using this on the Jackery then just plugging straight into the outlet...." Read more

"...said on the screen, "the charging source you are using does not have enough wattage to charge the laptop."..." Read more

"...So the way I see if the pros are these:Provides plenty of power at a very low price 300Watts..." Read more

"...It's quiet and powerful. It also charges phones well." Read more

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Nate

Great quaility, low power drain

Reviewed in the United States on July 12, 2024

Size: 1 - Power InverterVerified Purchase

This thing is awesome. I used it to charge devices while camping. It works great plugged into a jackery as well. It somehow pulls less energy using this on the Jackery then just plugging straight into the outlet. Fast charging. Excellent quality. I gave mine to a homeless girl. I will be buying another one.

One person found this helpful

Helpful

Zach

Does its job and does it well

Reviewed in the United States on April 10, 2024

Size: 2 - PD 65WVerified Purchase

I used this to keep my laptop and cell phone charged on a long road trip, and it worked like a dream! The USB-C plug provides fast-charging power for my phone whereas the USB plugs and wireless pad built into the vehicle are only regular charge capable. I was also able to charge my laptop and my phone at the same time, no problem. The cooling fan was almost completely silent to the point that I had to check to see if it was on, and it's also one of the smallest inverters of this type that I've ever owned and very lightweight, so it doesn't get in the way!

My one complaint is that the cord is a little shorter than would be ideal, and I had to have it on the passenger seat from the 12V plug in the console. If I plugged it into the one on the dash, it would just dangle before reaching the floor, and I didn't want it to swing and scratch the plastic. I might consider putting it inside the console next time and just running the charging cords out, but I'd have to find a new home for the stuff in there and it would lack ventilation.

6 people found this helpful

Helpful

User

High Quality, UL Listed!

Reviewed in the United States on June 20, 2024

Size: 1 - Power InverterVerified Purchase

Very nice inverter! UL listed and very quiet!

Had an issue with it not working in a Tesla (which used a 16V system), but it works great in the Jeep!

Bestek Customer Service is also top notch!

3 people found this helpful

Helpful

jsanti1984

Looks cheaply assembled, but more durable than it looks

Reviewed in the United States on March 16, 2013

Size: 1 - Power InverterVerified Purchase

Looks cheaply assembled, i.e. The USB ports are so misaligned with the metal front plate that it actually scratches whatever USB plug you plug in. Does not have a fuse inside of the cigarette lighter adapter. This broke within a couple of weeks.

While it's still looks cheaply assembled and the USB ports are still misaligned, it turns out the fuse between the lighter socket to the battery went out, so this didn't actually break when I reversed the polarity accidentally, as I thought it had. I wouldn't jump to the conclusion that it has reversed polarity protection since it did take the lights down and blew a fuse that I had connected to the socket, but at least it survived the incident which is more than I can say for a lot of other inverters. Once I realized it still works I tested it out with a 100 Watt fluorescent bulb. It passed with flying colors.

So the way I see if the pros are these:
Provides plenty of power at a very low price 300Watts
It's a relatively small for the wattage provides
Doesn't seem to have a problem with picky loads like fluorescent lightbulbs, even big ones.
Includes two USB ports

And the cons are:
The fan does not kick-in only when there's a heavy load, it's always on when the inverter is on, and it is loud
The cigarette lighter plug has no fuse in it (I do not know whether there is a fuse inside of the unit itself)

I live off-grid for several reasons, so I always like to have plenty of power inverters around. Although I prefer to use pure sinewave inverters, these little cheap square wave inverters come in handy, and this one has pretty good performance, and even survived brief polarity reversal (there was a 25 amp fuse between the socket and the battery)

There are lots of portable power sources that sell for hundreds of dollars that basically consist of a cheap universal SLA 12v battery, a charger and a power inverter, you could build one of your own item would using this item as the power inverter and maybe a couple small Odyssey motorcycle dual-use deep-cycle and starting batteries like the 12AH PC545 Odyssey PC545 Powersports Battery use a charger like the Schumacher Schumacher SC-600A SpeedCharge High Frequency Battery Charger with quick disconnect terminals, and you have yourself a portable power supply that can be recharged quickly, and be deep cycled. If you put a 20 W solar panel Ramsond® 20 Watt 20W W Solar Panel Module 12V Nominal Output RV Boat Battery Charger Charging Trickle Boat and add a cheapo 7 A charge controller Sunforce 7 Amp Charge Controller you have yourself portable emergency power for a fraction of what a completed solution would cost. That is what I will be using this unit for, since it is too noisy for just charging my phone when I am in a car, and its a good match for the above application.

20 people found this helpful

Helpful

nknmanzm

Works great and is nicely sized.

Reviewed in the United States on June 10, 2024

Size: 1 - Power InverterVerified Purchase

This works great. It is smaller than I thought it would be. Fits nicely under my radio in the SUV. It has a light that shows you when it’s on. It has an easy off and on switch. It’s great for camping. The cable length is great but not long enough to leave a car. Make sure there’s room somewhere near-ish to where it plugs in. I appreciate the combination of ports offered.

One person found this helpful

Helpful

Rachel Davis

Handy to keep in your car for the laptop

Reviewed in the United States on July 8, 2024

Size: 1 - Power InverterVerified Purchase

This is the second one I bought, the last one I lost a year ago. It's super helpful when I need to work on the road or plug in any camping equipment. It's quiet and powerful. It also charges phones well.

Helpful

Gretchen P.

Works Great!

Reviewed in the United States on May 4, 2024

Size: 1 - Power InverterVerified Purchase

I must’ve been living under a rock because I had no idea that these were a thing.
I work remotely and in the field as a nurse case manager. I see multiple patients a day and I do all of my charting electronically while with and in between patients.
I try to have a full battery when I start my day, but my laptop battery does not last past noon most days. It is so much harder than it should be to find cafe’s or diner’s that has outlets readily available to charge my laptop & chart while having lunch. I do not always have access to outlets when doing home visits either.

Enter my new best friend - this product! I ordered the double outlet/double usb port model about a week ago & have been using it daily.
I love it!
It works well, it’s sturdy, and made with what feels like quality materials. Great price point also.
I used to have to go home and chart for 2 hours after I was off the clock. Not anymore though! I can take my breaks in my car and chart.
This inverter has been a life and time saver!

10 people found this helpful

Helpful

Rhea Samons

Great products!

Reviewed in the United States on May 24, 2024

Size: 1 - Power InverterVerified Purchase

It’s super easy to use, not too bulky and I don’t have any loud noise coming from it. It doesn’t over heat and it’s of great quality. It charges my devices with optimal speed and it has performed really great.

7 people found this helpful

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Frank

Was great while it lasted *updated*

Reviewed in Canada on April 6, 2024

Size: 1 - Power InverterVerified Purchase

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.

One person found this helpful

sagar

Nice product!

Reviewed in Canada on June 6, 2024

Size: 1 - Power InverterVerified Purchase

Been using it for a couple of weeks now, no issues whatsoever. Working as it should

Dan

Compact and lightweight

Reviewed in Canada on July 15, 2024

Size: 1 - Power InverterVerified Purchase

Triple the small than my previous failed one from Crappy Tire. Love this one. The only caveat is the fan, sounds like low quality one that WILl fail eventually, something to be aware of.

Zolfa

Do not trust this ! Extremely Disappointed with Defective Device

Reviewed in Canada on September 10, 2023

Size: 1 - Power InverterVerified Purchase

I recently purchased a device from Amazon, and my experience has been nothing short of a nightmare. This device not only ruined my car's lighter socket but also cost me an additional $60 to fix the damage it caused.
From the moment I plugged in the device, it became evident that something was seriously wrong. It emitted a strange odor and began to overheat. Within minutes, my car's lighter socket was damaged beyond repair. I was left with no choice but to take my car to a professional, which set me back an extra $60 for repairs.

The fact that this device was sold on Amazon without proper quality control is deeply concerning. I expected a certain level of reliability when making a purchase through such a reputable platform, and this experience has shattered my trust.

I strongly advise potential buyers to steer clear of this product. It's not only a waste of money but also poses a significant risk to your vehicle. Amazon should take immediate action to prevent the sale of such defective products and ensure a safer shopping experience for its customers

ben

Functions great

Reviewed in Canada on June 1, 2024

Size: 1 - Power InverterVerified Purchase

Used on 2 occasions so far. Worked flawlessly

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BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

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Product Description

USA BASED SUPPORT

2 USB-A 2AC PLUG

Widely Compatibility

BESTEK Advantage

BESTEK 300W Car Power Inverter (Red)

Aluminium Alloy Housing

Smart Cooling Fan

Isolation Voltage Protection

Quick USB Charging

Durable Cigarette Lighter

Top Speed Charging

Power On LED Strip Lights

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