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From the brand

BESTEK Power Inverter

Product Description

BESTEK Advantage

BESTEK is a Leading Public Listed Brand Manufacturer ( Stock Code:833663 ) in Shenzhen, Focusing on the R&D,Manufacture,Oversea Sale since Founded in 2007.The main Products are Power Inverter, Power Strip,Voltage Converter, Travel Adapter and Smart Household,with more than 1000 Domestic and Oversea Patent Technology and Qualified Certificates for these Products.

BESTEK 300W Power Inverter

BESTEK power inverter, a trusted and portable backup power solutions to keep your important devices powered up at anytime and anywhere. This 300 watts power inverter with 2 AC 110V outlets and 2 USB ports is ultra compact and lightweight, designed for charging on the way or camping outside. It is suitable for charging all major brand laptops,digital portables such as video camcorder,digital camera, iPad,iPod,cell phone,PSP, DVD player etc.

2 110V AC Outlets
2 Smart USB ports, DC 5V 4.2A output
Durable cigarette lighter plug
Advanced multi-Protection
Low battery alarm
Quiet cooling fan
Ultra compact and lightweight


Dual AC outlets and USB charging ports Designed 2 AC outlets and 2 smart USB charging ports, ideal for powering 4 devices simultaneously on the way.	Isolation Voltage Protection Full-protection with short-circuit, low-voltage,over-charge,over-voltage, over-load,over-temperature protection, isolation voltage protection,ensure your battery and devices safety.	Quiet Cooling Fan Built-in quiet and high speed cooling fan,low working noise,help to dissipate the internal working heat efficiently, protect devices from overheating.


Ultra compact and lightweight Ultra compact design makes the power inverter easy for storage and won't occupy much space when connecting it on your car center console.	Durable Cigarette Lighter Plug Double durable springs each side for tight connecting and electrical safety.	Universal Compatibility Convert DC 12V to 110V AC, can be used to charge or powering most portable electronic equipment which rating power is under 300 watts.


	200w Power Inverter	300w Power Inverter	300w Pure Sine Inverter	1200w Power Inverter	2000w Power Inverter
	See Details	See Details
Customer Reviews	347	1,271	567	1,853	1,853
Price	—	—	$59.98	$147.99	$167.74
AC Outlets	2	2	2	2	3
USB Ports	4 ports,max output 4.8A	2 ports,max output 4.2A	2 ports,max output 4.2A	2 ports,max output 4.2A	None
Connect Method	Cigarette lighter plug	Cigarette lighter plug	Cigarette lighter plug and battery clamps	Battery Clamps	2 Pairs Battery Clamps
Inverter Type	Modified wave	Modified wave	Pure Sine wave	Modified wave	Modified wave
Over Voltage Protection	✓	✓	✓	✓	✓
Under Voltage Protection	✓	✓	✓	✓	✓
Over Load Protection	✓	✓	✓	✓	✓
Short Circuit Protection	✓	✓	✓	✓	✓

Product information

Technical Details

Manufacturer

‎BESTEK

Brand

‎BESTEK

Item Weight

‎1.06 pounds

Product Dimensions

‎4.9 x 3.4 x 1.9 inches

Item model number

‎MRI3011MU

Is Discontinued By Manufacturer

‎No

Manufacturer Part Number

‎MRI3011MU

Wattage

‎300 watts

Additional Information

ASIN

B0191E8XWC

Customer Reviews

4.3 1,271 ratings

4.3 out of 5 stars

Best Sellers Rank

#631,731 in Automotive (See Top 100 in Automotive)
#869 in Power Inverters

Date First Available

December 7, 2015

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Product guides and documents

User Guide (PDF)

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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 300Watt Pure Sine Wave Power Inverter Car Adapter DC 12V to AC 110V with 4.2A Dual Smart USB Ports (Blue)	dummy BESTEK 300Watt Pure Sine Wave Power Inverter Car Adapter DC 12V to AC 110V with 4.2A Dual Smart USB Ports (Red)	dummy BESTEK 200W Power Inverter DC 12V to 110V AC Inverter with 4.2A 4-Port USB Car Adapter (Black)	dummy BESTEK 500W Power Inverter DC 12V to 110V AC Converter with 4.8A Dual USB Car Charger ETL Listed (Blue)	dummy BESTEK 500W Power Inverter DC 12V to 110V AC Converter with 4.8A Dual USB Car Charger ETL Listed (Grey)
	See details	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	Currently unavailable.	-15% $48.99 List: $57.74	-13% $49.99 List: $57.74	$25.99	$59.99	$59.99
Delivery	—	Get it as soon as Friday, May 3	Get it as soon as Friday, May 3	Get it as soon as Friday, May 3	Get it as soon as Friday, May 3	Get it as soon as Friday, May 3
Customer Ratings	4.31,271	4.55,122	4.55,122	4.54,197	4.65,132	4.65,132
Value for money	3.9	4.5	4.5	4.2	4.3	4.3
Noise level	3.8	4.3	4.3	3.9	4.5	4.5
For traveling	—	4.5	4.5	4.4	4.4	4.4
Easy to use	4.6	—	—	4.4	4.6	4.6
Durability	4.3	—	—	4.1	4.5	4.5
Sold By	—	BESTEK.	BESTEK.	BESTEK.	BESTEK.	Amazon.com
power outlets	4	4	4	7	4	4
output voltage	110 volts	120 volts	120 volts	110 volts	110 volts	110 volts
input voltage	12 volts	12 volts	12 volts	12 volts	12 volts	12 volts
output power	600 watts	300 watts	300 watts	200 watts	500 watts	500 watts
weight	—	1.4 pounds	1.4 pounds	9.6 ounces	2.3 pounds	—

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Customer reviews

4.3 out of 5

1,271 global ratings

How customer reviews and ratings work

Customers say

Customers like the value, connectivity and versatility of the power inverter. For example, they mention it's inexpensive, has twin USB ports and does not take up much real estate. Some appreciate the performance, and charging. That said, opinions are mixed on quality, power, and noise.

AI-generated from the text of customer reviews

301 customers mention250 positive51 negative

Customers like the performance of the power inverter. They say it works wonderfully, making their drive to work fabulous, and provides AC power and USB power for accessories like phones. It does not get hot at all, and works great for charging laptops and tablets. Customers also mention that it is seriously useful, and the fan is better than average.

"...on it is an air mattress pump, which is rated for 165W. The unit powers it perfectly and does not get hot at all even after 5 minutes of continuous..." Read more

"...This unit did very well while either running the laptop (batteries fully charged) or charging the batteries in the laptop (computer off)...." Read more

"...The fan is noticable but not to overly loud.The output definitely differs wether your vehicle is running or not tho...." Read more

"This worked great for charging laptops and tablets on a recent family trip. It helped keep the kids entertained the whole way!..." Read more

62 customers mention44 positive18 negative

Customers like the value of the power inverter. They mention that it's a great product for the price, works well, and is inexpensive. Some say that the device is compact and does not take up too much real estate.

"This is a good a fairly priced 300W unit.I like that it is plastic casing, which lends itself better for boating and camping use...." Read more

"...A really excellent value!" Read more

"...No light, no nothing...." Read more

"...Great product for the price." Read more

44 customers mention33 positive11 negative

Customers like the charging capabilities of the power inverter. They say it charges their phones as quickly as a wall outlet, it charges an Amazon tablet, and a bluetooth speaker. Some say it works well in their truck and can run a fan, TV, and charge items.

"...Havent actually put a volt meter on it yet, but it does power various electronics and tools without a problem...." Read more

"...Charged the batteries no problem. Also charged my cell phone the whole time. Also charged my iPad so my son could watch movies on the 4 hours home...." Read more

"...Cons:Charging rate is slower than I would have liked...." Read more

"...But I do like how it charges my phones without me having to power on the fan, it wroks really well i like it alot." Read more

39 customers mention31 positive8 negative

Customers like the connectivity of the power inverter. For example, they say the twin USB ports supply power with the switch off or on, the actual plug ports are great, and the USB ports are always powered. Some mention that the double sockets are great.

"...It is not a con for my use.The USB ports work, however, I prefer to use the OEM charging cubes for my electronics...." Read more

"...As others have noted, the USB ports are always powered if the inverter is plugged into the 12 volt supply, independent of the position of the power..." Read more

"...It's quiet, efficient, and versatile. I love that it has two USB ports and two standard US outlets...." Read more

"...Second was the fact that the plugs are close together. Any kind of plug other than a standard three prong will interfere with the other plug...." Read more

32 customers mention32 positive0 negative

Customers find the power inverter very useful for car trips, long road trips, and travelling with kids. They also say it's essential for road trips with gadgets and charging laptops.

"...I like that it is plastic casing, which lends itself better for boating and camping use. No sharp edges and doesn't scratch or mark anything...." Read more

"...This is fantastic and a lifesaver on the road. It is a little loud, but honestly if you have the radio on, you won't notice after a few minutes." Read more

"Great for roadtrips. Plenty of power for 2 tablets. 2 active (screen on) tablets, a phone and a Phantom Drone battery were too much for it though...." Read more

"...I'm glad I got it and it's also convenient on trips too!" Read more

116 customers mention64 positive52 negative

Customers are mixed about the noise produced by the inverter. Some mention that it's pretty quiet for how capable it is, making very little sound at all. However, others say that it makes a high-pitched noise that is noticeable when parked or sitting at. While it't loud, it'll definitely not be silent, and the motor will whine.

"...It is quiet enough that I was easily able to sleep with the fan running in very quiet campsites...." Read more

"...It is quiet, but may annoy some in a very quiet environment. It is not a con for my use...." Read more

"...The fan is noticable but not to overly loud.The output definitely differs wether your vehicle is running or not tho...." Read more

"...34;ultra silent cooling fan " Though It's not loud, it is definitely not silent...." Read more

56 customers mention38 positive18 negative

Customers are mixed about the quality of the power inverter. Some mention that it functions great and is well made. However, others say that it failed after just over a year of use and is not durable at all.

"...All plastic construction- seems OK, but not sure how well it will hold up stored in a car." Read more

"...Regardless, this product functions great and seems well made. Next time I'll try just plugging the USB tablet and phone cords into the USB ports...." Read more

"...When I tried to inflate my air mattress the inverter died instantly even though it said the pump was only 200 watts...." Read more

"...This one is very well constructed and super quiet. So quiet that it's easy to forget it's plugged in. Watch your battery......." Read more

35 customers mention23 positive12 negative

Customers are mixed about the power of the inverter. Some mention that it provides all the power they need, and is consistent. They say it can run really anything, especially outdoors or camping related. However, others say that it does not provide enough power to even charge a phone, and that it overloads at 200 watts.

"...The voltage is reasonably close to 110VAC, and the unit provides adequate power without getting hot...." Read more

"...Keeps my laptop and phone charging overnight without significant battery drain. The fan is noticable but not to overly loud...." Read more

"...It sends enough power to turn it on but will not allow it to run. It will probably work great for phones and tablets." Read more

"Fantastic inverter! It's quiet, efficient, and versatile. I love that it has two USB ports and two standard US outlets...." Read more

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Free88

Good for the price

Reviewed in the United States on January 13, 2017

Verified Purchase

This is a good a fairly priced 300W unit.

I like that it is plastic casing, which lends itself better for boating and camping use. No sharp edges and doesn't scratch or mark anything. It is very light and convenient for my use. I like that the cord is built in, as I would never connect this directly to a battery in my use.

The voltage is reasonably close to 110VAC, and the unit provides adequate power without getting hot. The biggest load I have put on it is an air mattress pump, which is rated for 165W. The unit powers it perfectly and does not get hot at all even after 5 minutes of continuous use. There is a built in fan that runs all the time when the unit is switch on. It is quiet, but may annoy some in a very quiet environment. It is not a con for my use.

The USB ports work, however, I prefer to use the OEM charging cubes for my electronics. The USB ports will work in a pinch, and means you got to pack one less thing.

I would buy this again.

One person found this helpful

Helpful

Daisy

Very quiet inverter with useful USB charging ports!

Reviewed in the United States on September 10, 2016

Verified Purchase

Got this to use in the RV while doing lots of photography. Needed to power my 17 inch Samsung i7 laptop, with a 220 watt power supply. This unit did very well while either running the laptop (batteries fully charged) or charging the batteries in the laptop (computer off). If I had run the laptop batteries down and was doing serious work editing or moving photos between drives, the inverter would cut off, and I would have to toggle the power switch on the back of the inverter to start it up again. I eventually got used to charging my laptop up fully before using it to with the inverter, and the inverter was able to keep the laptop running without a hitch. It may have been an issue with the 12 volt supply circuit. I didn't run the inverter on a known high amperage 12 volt circuit in the RV, so I am not deducting a star for that.

There is a quiet fan that is always on when the switch in the back is turned on. It is quiet enough that I was easily able to sleep with the fan running in very quiet campsites. The volume and pitch of the fan are unobtrusive.

As others have noted, the USB ports are always powered if the inverter is plugged into the 12 volt supply, independent of the position of the power switch on the back. I like this very much, since I can charge my iPhone or Kindle with the fan turned off if I am not using the 110 volt section.

A really excellent value!

40 people found this helpful

Helpful

Rene L.

Good value.4

Reviewed in the United States on October 28, 2022

Verified Purchase

So far this has been a good purchase. Keeps my laptop and phone charging overnight without significant battery drain. The fan is noticable but not to overly loud.

The output definitely differs wether your vehicle is running or not tho. When I tried to inflate my air mattress the inverter died instantly even though it said the pump was only 200 watts. But when I started the car it worked fine.

One person found this helpful

Helpful

Epic music for gaming

Great product!

Reviewed in the United States on July 12, 2016

Verified Purchase

This worked great for charging laptops and tablets on a recent family trip. It helped keep the kids entertained the whole way!
A few notes about direct wiring: you will have to cut the cord if you go that route. I was able to disassemble the cigarette plug to find out which cable was hot, but they're soldered to it. I ended up having to cut the cable anyway.
I hope it didn't void the warrenty, but the manufacturer recommends direct wiring. On mine, the hot wire was the one with a white line as opposed to the wire that was solid black. Once you see which wire goes to the inside and outside terminals of the plug, a quick google search will tell you which one is hot.
Then I bought a cheap amp wiring kit from Amazon to install it. It turned out great. PS. You wont need the AV or remote wires that come with the kit.
I had to figure all this out because I didn't see it in other reviews. Hope this helps someone else.

Helpful

Jeepdog81

Great power inverter for a Jeep

Reviewed in the United States on August 20, 2022

Verified Purchase

I installed this in my Jeep Wrangler for a laptop power source. Works very well, very little sound at at all. There is a cooling fan that keeps it cool, but it is very quiet. Great product for the price.

One person found this helpful

Helpful

Jordan S.

Quiet! Efficient! Versatile!

Reviewed in the United States on April 15, 2016

Verified Purchase

Fantastic inverter! It's quiet, efficient, and versatile. I love that it has two USB ports and two standard US outlets. I recently took this camping to blow up my air mattress and was so glad I didn't opt for the hand pump! Other inverters I've had in the past didn't have cords, so it plugged directly into the cigarette lighter. With this product, the cord allows you some freedom to move the inverter around, from the front seat to the back, or as you see fit. It's also MUCH quieter than others I've had. And at a really great price, too.

This is a smart gadget to have in your car at all times. You never know how or when it might come in handy.

One person found this helpful

Helpful

Amazon Customer

Need Battery Clips and Failed Out of the Box

Reviewed in the United States on April 19, 2019

Verified Purchase

Very disappointing. Write up for BESTEK 300W Power Inverter DC 12V to 110V AC Car Adapter with 4.8A Dual USB Car Charger makes no mention of needing battery clips for devices over 150W as recommended in the user notes (attached). Battery clips are available separately and as part of a package, but needing battery clips was an unwelcome surprise. Green light came on when plugged into cigarette lighter but changed to red (shut down) as soon as I turned on small wattage (2.5W grinder and 5.5W hand vacuum). When connected directly to the battery with battery clips, 200W grinder worked, but again the same low wattage devices caused the inverter to shut down. Received *no* response from BESTEK gmail address for service provided by 1/2 page user guide.
Minor update - Have since learned that *any* device of 150 W or more should only be run from battery connections, not cigarette lighter adapter. Since this inverter is rated at 300W, probably should only be sold with battery clips. Also, some devices pure sine wave inverters; this is a modified sine wave inverter.

One person found this helpful

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Murad

Works as intended

Reviewed in Canada on September 12, 2023

Verified Purchase

Works perfect, sas able to game on my laptop (180w) without any problems.
Not sure how the fan noise bothers people while it's really silent and while you drive you can't hear it at all.
P.s
Don't charge your laptop via type c from usb port, use adapter!

Amazon Customer

un gran producto

Reviewed in Mexico on April 17, 2023

Verified Purchase

Esto funciona bien, pero no vino con el clip de la batería, lo cual es decepcionante. Sin embargo, recomendaría y compraría de nuevo.

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Amazon Customer

Good for the car

Reviewed in Canada on December 30, 2023

Verified Purchase

I purchased this charger for the car when we went on a road trip.
Didn't need it but it works well as I tested it multiple times

JUAN JOSE HERNANDEZ

EXELENTE

Reviewed in Mexico on March 8, 2023

Verified Purchase

Buen producto sea utilizado dos veces cero problemas

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tony

ok

Reviewed in Canada on February 28, 2024

Verified Purchase

ok

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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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From the brand

BESTEK Power Inverter

Product Description

BESTEK Advantage

BESTEK 300W Power Inverter

Dual AC outlets and USB charging ports

Isolation Voltage Protection

Quiet Cooling Fan

Ultra compact and lightweight

Durable Cigarette Lighter Plug

Universal Compatibility

Product information

Technical Details

Additional Information

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Brand	BESTEK
Power Source	110v,Battery Powered,Corded Electric
Wattage	300 watts
Color	Black
Product Dimensions	4.9"L x 3.4"W x 1.9"H

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

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From the brand

BESTEK Power Inverter

Product Description

BESTEK Advantage

BESTEK 300W Power Inverter

Dual AC outlets and USB charging ports

Isolation Voltage Protection

Quiet Cooling Fan

Ultra compact and lightweight

Durable Cigarette Lighter Plug

Universal Compatibility

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

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