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

Harness the Power Anywhere: 300W Universal Travel Adapter and Car Inverter with Dual USB Ports

(475 customer reviews)

Original price was: $29.99.Current price is: $24.59.

Today price savings: -18%
Rating: 4.5 out of 5 stars
Opinions & Reviews: 32915
Product Videos: 6
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SKU: B004MDXS0U/com Category:

Product Features and Description

  • Top-Ranked Brand: BESTEK power inverter is a leading brand in America known for its high-quality power inverters. It offers 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports.
  • Quick Charging: The BESTEK power inverter comes with two 110V AC outlets perfect for charging larger devices like laptops and tablets, along with 2 USB charging ports (0-2.4A), making it an excellent choice as a necessary car accessory for universal travel adapter.
  • Portable Design: The power inverter from BESTEK is designed to be ultra-compact and lightweight, similar in size to an iPhone, making it ideal for vacations, work trips, and camping. It includes a 24-inch cigarette lighter plug that allows it to be plugged into almost any vehicle.
  • Comprehensive Protection: The BESTEK power inverter comes with a built-in 40 amps fuse for device protection. Its safe charging design offers protection against overheating, under and over-voltage charging, and short-circuiting.
  • Durability and Silent Operation: The power inverter has a durable metal housing that provides superior protection from drops and bumps. Its smart cooling fan system ensures silent operation. The fan speed increases when the device heats up or when the output power exceeds 70W. It also comes with an 18-month warranty.
BESTEK Power Inverter, a 300W DC 12V to 110V AC Car Inverter

The BESTEK Power Inverter, recognized as America’s top power inverter brand, ensures a reliable transformation of 300 watts continuous DC to AC power and delivers a peak power of 700 watts. This premium product, specifically designed for DC 12V and Car use, is not compatible with DC 24V and airplane use. Boasting of 2 USB ports and 2 AC outlets, it provides an efficient solution for powering your devices on the go. However, it’s recommended to keep one USB port free when charging your iPad through the 2.1A USB port.

The power inverter’s exterior is made of high-quality Aluminium alloy, ensuring a solid and durable structure that can withstand severe environments. Its smart cooling fan system ensures silent operation, with the fan speed increasing when the device gets warmer or when the output power exceeds 70W. This design provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging. It also includes two smart USB charging ports that can intelligently detect your devices and deliver the best-matched charging current for fast charging speed. Each port offers auto 0-2.4A, with a total output of 4.8A.

The BESTEK Power Inverter also functions as a universal travel adapter, making it a perfect companion for long trips. The 24-inch cigarette lighter plug allows the power inverter to be plugged into almost any vehicle, transforming it into a universal power inverter for car adapter. With a lighter socket that can withstand up to 5000 insertions and extractions, it ensures a stable and secure connection. Built-in USB charging ports and a plug-in buckle design provide a stable current for high-speed charging. Its unique ability to power LED lights makes it ideal for creating festive atmospheres during Christmas and other celebrations.

Universal Travel Adapter with BESTEK 300W Power Inverter

Unleash the Power: Exploring the BESTEK 300W Power Inverter

Don’t miss our latest video showcasing the exceptional BESTEK 300W Power Inverter. Discover its unique features and witness how this gadget can enhance your car’s functionality!
Watch more videos about “BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter” here.
  • Product Dimensions: 4.8 x 3.1 x 1.9 inches
  • Item Weight: 10.1 ounces
  • ASIN: B004MDXS0U
  • Item model number: MRI3011BU
  • Best Sellers Rank: #514 in Automotive (See Top 100 in Automotive) #6 in Power Inverters
  • Is Discontinued By Manufacturer: No
  • Date First Available: February 5, 2011
  • Manufacturer: BESTEK
  • Country of Origin:
  • Brand:
  • Model:
  • Manufacturer Part Number:
  • Voltage: 12 to 110 volts
  • Wattage: 300w
  • Package Dimensions:
BESTEK Power Inverter, a 300W Car Inverter with 4.2A Dual USB Car Adapter

Navigating the Trade-offs: The Upsides and Downsides of the Product

Several customers have expressed satisfaction with the product, citing its usefulness for a range of applications. A customer, Nkarna, mentioned how the product served as an excellent inflator for an air mattress during a camping trip, scoring it a 5-star rating. Similarly, Tina Garbarino claimed it to be the best power inverter she had used after going through three others. She also pointed out that it’s a product you can’t cheap out on, indicating its quality.

The compact size and charging capabilities of the product also seem to have won over many users. Richard Kearney commended the product for its efficiency, allowing him to use Bluetooth in his 2003 Tacoma. Another user, Michael, applauded the product’s portability, stating that it worked well with his small laptop in his car. Users also appreciated the inverter’s low noise level while in use.

Furthermore, the product’s long-term performance and durability have also been highly praised. As noted by user T. Estrick, the product has remained sturdy, durable, and reliable even after several years of use. For Krystal, it has become a constant companion during car trips and camping, used frequently to charge a computer and phone.

Despite the numerous positive reviews, the product has also received its share of criticism. Several customers expressed disappointment over the product’s reliability and functionality. For instance, user Mumbles complained about the product going into fault mode without anything plugged in. Nursing101 shared a similar experience, stating that the product did not work the first time it was used right out of the box.

Other users have had issues with the product’s longevity and its impact on other devices. Derek Ramp, for instance, lamented how the product burned through three fuses in his truck after just two uses. Another customer, Just me, was upset that the product broke the auxiliary power outlet in their new car after one use.

Lastly, some customers questioned the product’s power capabilities. Charles Stark noted that the product doesn’t do anything a cigarette adapter wouldn’t do and that it doesn’t power much. Mike also reported that the inverters do not work properly, turning on and off every second, making it impossible to charge. He further criticized the company’s customer service for not responding to messages for help or warranty.

What do the stars speak of?

Opinions about this product were divided in such a proportion among the buyers.

Five Stars: 77%
Four Stars: 13%
Three Stars: 4%
Two Stars: 2%
One Star: 5%
The most helpful positive feedback Reviewed in the United States on June 28, 2023 by Cindy Sisneros, and is titled “Great for air mattress”
I was really worried because I have an air mattress that has a built in pump, i didn’t know if that was going to be an issue. But damn! This thing really pulled through and did an amazing job. Totally need this if you’re inflating beds/floats on a camping trip. Totally awesome.
Customer Rating: 5
Helpful Rate: 4
People find the following negative one quite helpful. Reviewed in the United States 🇺🇸 on July 20, 2023 by Mumbles, titled “Faults”
Goes in fault mode without anything plugged in! 🤬
Customer Rating: 1
BESTEK 300W Power Inverter, a Universal Travel Adapter for Car

Queries & Clarifications: All You Need to Know

1. How does the BESTEK 300W power inverter for car work?

The BESTEK 300W power inverter works by converting DC 12V power from your car’s battery into AC 110V power. This allows you to power or charge devices such as laptops, phones, tablets, and other electronic devices in your car. The inverter plugs into your car’s cigarette lighter socket and has 2 USB ports and 2 AC outlets for connecting your devices.

2. Is the BESTEK 300W power inverter a universal adapter?

Yes, the BESTEK 300W power inverter can be considered a universal adapter as it can be used to power or charge a wide range of electronic devices. However, it’s essential to note that the inverter is designed for use with DC 12V and cars only. It’s not suitable for DC 24V and airplane use.

3. Can the BESTEK 300W power inverter handle high power electric devices?

No, it’s not recommended to use the BESTEK 300W power inverter to power high power electric devices such as hair dryers and electric heaters. These might draw too much power and blow a fuse in the inverter.

4. Is the BESTEK 300W power inverter safe to use?

Yes, the BESTEK 300W power inverter is safe to use. It features a safe charging design that provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging. Its aluminium alloy shell also protects the internal components from severe environments.

5. Does the BESTEK 300W power inverter get hot during operation?

It’s normal for the inverter to become warm to the touch while you are using it. The inverter has a smart cooling fan system that operates silently and runs faster when the device gets warmer or when the output power exceeds 70W to keep it cool.

6. How many devices can the BESTEK 300W power inverter charge at the same time?

The BESTEK 300W power inverter has 2 USB ports and 2 AC outlets, so you can charge or power up to four devices at the same time. However, it’s important to ensure that the total power consumption of the devices does not exceed the inverter’s capacity.

7. Can the BESTEK 300W power inverter be used for long road trips?

Yes, the BESTEK 300W power inverter is an ideal choice for long road trips. It can keep your devices powered or charged during your trip, and its durable design allows it to withstand the rigours of travel.

8. How long is the cable that connects the BESTEK 300W power inverter to the car’s cigarette lighter socket?

The cable that connects the BESTEK 300W power inverter to the car’s cigarette lighter socket is 24 inches long. This gives you some flexibility in where you place the inverter in your car.

BESTEK Power Inverter, a 300W DC 12V to 110V AC Inverter with USB PortsBESTEK 300W Power Inverter, a Universal Travel Adapter with 2 AC Outlets and 2 USB Ports

Additional information

Product Dimensions

4.8 x 3.1 x 1.9 inches

Item Weight

10.1 ounces

ASIN

B004MDXS0U

Item model number

MRI3011BU

Best Sellers Rank

#514 in Automotive (See Top 100 in Automotive) #6 in Power Inverters

Is Discontinued By Manufacturer

No

Date First Available

February 5, 2011

Manufacturer

BESTEK

Voltage

12 to 110 volts

Wattage

300w

475 reviews for BESTEK 300W Power Inverter – DC 12V to 110V AC, 4.2A Dual USB Car Adapter

  1. krc

    Well made but a few dollars more buys much better

    Very solidly made but poorly designed. A noisy fan turns on with power even when not needed. Very inefficient in power conversion, especially ruinous for small loads but bad enough at its middle load peak efficiency (83%).

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 8, 2024
  2. Gorilla Sapiens

    no reverse polarity protection, not user servicable

    got this to use for a project, and had to hack the connector off for my application. and i accidently connected it reverse polarity. that’s all my fault. of course it popped. i opened it up to see if there was anything i could repair. it is not meant to be serviced. there is no way to take it apart completely without a soldering iron. there’s what looks like a 5A fuse in there, which i think i blew, but it too is soldered to the board. this device is not robust to reverse polarity and was never intended to be serviced. it’s just easier / better for me to find another one that is not quite as poorly made.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 8, 2024
  3. René Alejandro Martínez Gonzalez

    Lol

    Funciona de maravilla.5 stars

    Variation: Size: 2 – PD 65W / Reviewed in the United States on December 7, 2024
  4. Gustavo Neira

    Buen producto

    Llego a tiempo en buen estado y funciona de maravilla

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 5, 2024
  5. G46893

    Poor quality

    Purchased in August but didn’t start using until October and was using it once a day for 20 minutes to cook some steel cut oats, worked for approximately 3 months and stopped working doesn’t turn on anymore checked the plug and fuse plug is good. Assuming something internal burned out. Don’t waste money on this inverter.

    Variation: Size: 2 – PD 65W / Reviewed in the United States on December 5, 2024
  6. Thinh Dominick Bui

    Nice little unit for road trippers with gadgets like me.

    Good for road trippers like me who need to use my car as a power station and charge my various gadgets. Until I get a nice battery/power station, this little unit will suffice. This things is good for charging my drone, gaming laptop, cameras, phones, and lights. Great little thing. People recommend to keep this thing flat and horizontal, and to not block the fan in the rear. Do not plug large appliances into this thing. You will blow a fuse.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 4, 2024
  7. David Houck

    ⚡ A Must-Have for On-the-Go Power! 🚗

    The BESTEK 300W Power Inverter is an absolute game-changer for road trips and daily commutes! It easily converts DC 12V to 110V AC, allowing me to power up laptops, phones, or small electronics from the car. The 4.2A dual USB car adapter is incredibly convenient, letting me charge multiple devices at once without any issues. It’s compact, efficient, and reliable—perfect for anyone who needs power on the go. Whether you’re traveling or just need some extra charging capacity, this inverter has you covered! 🔌💻

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 3, 2024
  8. Lucas

    Only output 88 volts, did not work well

    Wouldn’t power anything so I checked with a fluke multimeter and it only outputs 88 volts.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 2, 2024
  9. Rebecca Marton

    Works great

    This works great and is a great price!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 2, 2024
  10. pochemuchka

    unreliable, AND does not provide sufficient power

    The media could not be loaded. advertised 300W is not able to charge electric scooter (110W) and maintain (not charge) laptop operation. You can say the product is not as described. One reason could be that most cars’ cigarette socket is only rated to provide 180W power, so whether or not this device is 300W continuous/700W peak is moot, since this is beyond the fuse capacity of the vehicle, any vehicle. Furthermore, 5 weeks into using, the fan has started to rattle. Because of the fan noise, I recomment against buying, as it might fail you the moment you most need it.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on December 1, 2024
  11. Not satisfied

    It broke my car

    When I connected this device to my car – my fuse burned out and the cigarette lighter no longer works. I thought it was the car, so I tried to connect it to another one, the same thing. I highly do not recommend it.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 29, 2024
  12. David

    Excelente

    Muy buen producto… ojo es de 300 watts por tanto solo artículos de bajo voltaje muy bueno y duradero

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 23, 2024
  13. Anna k.

    AVOID THIS PRODUCT AT ALL COSTS

    I WOULD GIVE IT A 0 IF I COULD…. PLEASE DO NOT BUY THIS PRODUCT!! I only used it ONCE!!!!! Literally plugged it in and my car’s battery gave up after a few moments. Then all these lights turned on right after… now this is going to cost me literally THOUSANDS. 😒 An absolute GARBAGE!!!!!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 23, 2024
  14. RetireD

    Excellent Inverter for the price! Outstanding customer support!

    I purchased the BESTEK 300W 12VDC -> 110VAC Inverter to power a prototype solar-powered water pump system that I designed and built. The battery I’m using is a small 12V/20Ah LiFePO4. It’s charged with a solar panel and solar charge controller. I had a few questions for the manufacturer about the DC input range of the inverter. They were very responsive and helpful. The prototype solution is working flawlessly. I highly recommend this BESTEK 300W Inverter – and will be purchasing more in the coming months.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 23, 2024
  15. Jorge E. Bacci

    Good product

    It’s a very complete device

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 21, 2024
  16. Gumby

    RETURNED

    USELESS

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 19, 2024
  17. Antony García

    Gracias

    Gracias

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 17, 2024
  18. Harry Balzana

    Didn’t Last

    I used it for work charging dewalt batteries. I lasted 3 months. It lights up but no output 110v. I took it apart and there is no fuse to replace. I was hoping to fix it but it’s now useless and I wasted money.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 14, 2024
  19. Edward Gurule

    Great size and works great

    It’s a perfect size and well built.

    Variation: Size: 2 – PD 65W / Reviewed in the United States on November 13, 2024
  20. NH ANDY

    Most Excellent

    Works great 👍

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 12, 2024
  21. Seth L.

    terrible

    didnt work period. plugged it in nothing. ended up going to harbor freight.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 11, 2024
  22. Kathryn J Wyatt

    Inverter

    I like the idea of 2 outlets as well as 2 usb. This will be a great addition to my hurricane supply collection.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 11, 2024
  23. Jennifer Salcedo

    Overheat

    It makes to much annoying whining noise and it overheat as soon as you plug it in , wouldn’t recommend it.

    Variation: Size: 2 – PD 65W / Reviewed in the United States on November 6, 2024
  24. Joshua Greene

    Good buy

    Put one in all of my field trucks to power laptops and wifi units. Never had a problem.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 3, 2024
  25. Amazon Customer

    Waste of money

    Had this product for one month, used twice and just went to use for a car trip and blew a fuse. Don’t buy!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on November 2, 2024
  26. Doug

    Didn’t last a month

    Only had an iPhone plugged into the usb while driving and heard a loud pop and it started smoking. Think I got 2weeks out of it.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 28, 2024
  27. Michael Miranda

    Not 300w

    Connected 100w light to it and the light was very dim

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 28, 2024
  28. Kenny

    No mounting points but its well constructed

    I recently took a new job and with that job came the need to be more mobile, but the vehicle I was given to drive is a 2013 F350 with very low miles and aside from power windows, it leaves little to be desired. There is no bluetooth, no charging ports, and storage is almost non existent. I bought this hoping to mount it somewhere on the dash so that I had a way to charge devices on the go and it serves that purpose. It doesn’t have any mounting points, so be advised if this is a deal breaker for you. It would’ve been a nice feature given the good quality, but it wasn’t a deal breaker for me.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 27, 2024
  29. Chip board

    Amazing

    Amazing

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 27, 2024
  30. RILDO ESTEVES

    I just use it oct/2024 and works fantastic !

    I live in a country with really bad energy cuts now and i use this power inverter after years of purchase and just work great. Bought it on 2018 by the way. I just got back to write this review in order to help others. I use it for a 32″ and did not heat up just stood warm and no problems at all.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 24, 2024
  31. Melinda Simmons

    Very convenient

    Gets the job done.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 23, 2024
  32. KGBeezer

    Good product, good value

    Took this on a family trip for 10 days. It worked very well and provides options for charging.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 23, 2024
  33. Becky L Livermore

    Works great!

    It works great and easy to use. Very convenient

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 23, 2024
  34. Ivette

    This tiny box is powerfull

    I love it to charge my battery for my blower that I use when I go to customers and leave my containers nasty

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 23, 2024
  35. Jony

    It worked for the time being.

    Is it reliable I dont know for sure. But I only needed to use this once or twice. And it worked for my use case.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 22, 2024
  36. William

    Perfect for me

    Exactly what I needed for my company vehicles to power everyone’s accessories.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 21, 2024
  37. Liar

    Does not work as described

    I have a gaming labtops that pulls exactly 225w max. The best tek claims it can handle up to 300watts with 11-15v. It cannot even Handle a little tablet at 65watts.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 20, 2024
  38. Egor

    Good quality ))

    One drawback, two plug don’t fit. (

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 17, 2024
  39. Tom

    Will not work with Tesla

    Will not work with Tesla

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 16, 2024
  40. Brian

    Works as intended

    Works well. Had no trouble

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 14, 2024
  41. Jason stefani

    Junk

    Horrible didn’t even work when I got it

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 13, 2024
  42. Joseph

    Reliable

    Im a truck driver and this has saved my life when it comes to charging my devices FAST had it for 2 years but i recently damaged it. But i liked it and depend on it so much i bought another one. Very happy with this product 👌🏻

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 13, 2024
  43. S Hanson

    Good for travel

    The BESTEK 300W Power Inverter is a reliable choice for road trips. It efficiently converts DC 12V to AC 110V, powering devices with ease. The dual USB ports are a handy addition for charging phones. Its compact design fits well in the car, and the build quality feels robust. A must-have for travelers needing a convenient power source on the go.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 11, 2024
  44. abv5hc

    As described

    Durable, easy to use, great for traveling.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 10, 2024
  45. Rome

    trash

    You cant fit two phone chargers to outlet. I would never by from the seller again. Refund please!!!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 10, 2024
  46. Peter Simone

    Does it’s job.

    This little power inverter does what it says it’s gonna do. It’ll power a couple laptops or similar devices on a long car ride. Dual usb ports are nice to have. Small firm factor is a plus. It’s a lower capacity inverter so it won’t power anything much bigger. Good for what it is and good for the money.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 9, 2024
  47. Mitch Ripke

    Awesome product.

    I love these so much, that this is the second one of these that I have ordered. I use them in my business vehicle and they are indispensable. They are turned on daily, and don’t run the battery down in the vehicle, which is a HUGE plus for me.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 7, 2024
  48. Servehim

    Great tool to have for automobiles

    I purchased this a while ago, it’s a great instrument for your car. Has many uses like heating hot coffee with plug or charging multiple devices with Usb ports.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 7, 2024
  49. Mike L.

    Works awesome

    Small enough but dependable

    Variation: Size: 2 – PD 65W / Reviewed in the United States on October 7, 2024
  50. mike herman

    worth the money

    does just what its supposed to do no issues at all !!!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 7, 2024
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