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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:

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

  1. Jason E

    Don’t buy

    Bought, arrived on time. Product did not work.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 6, 2024
  2. Don Keach

    AC output is only 85 volts.

    I measured the output with a DVM and it was only 85volts AC.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on October 5, 2024
  3. Franklin

    Awesome!!

    Purchase the car adapter for an employee who use her laptop to process inspections in rural areas of the state of Florida.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 30, 2024
  4. RatedR

    Works

    Great for price

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 29, 2024
  5. Rob Van Alstyne

    Kept Laptop charged during trip

    I recently did a road trip which was was a seven hour drive one way. My girlfriend works as a court reporter and used this charger during the whole trip. Kept the laptop charged at 100%.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 27, 2024
  6. Kevdog.1

    Works great!

    It’s small, lightweight ,works good, doesn’t get hot. I definitely recommend.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 25, 2024
  7. GG.

    Great power inverter for my car!

    I use this power inverter with my BMW X5 and it works really well. Shop with confidence!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 25, 2024
  8. G. T. Hood

    Great for powering your computer while on the road!

    This is a very dependable, yet inexpensive unit that performs exactly as described. It is quiet and did not overheat like some others I have used in the past. Great price, and delivered “Amazon-fast.”

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 25, 2024
  9. Diane R 87144

    Great

    Great for travel, easy to use.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 24, 2024
  10. Kim Westbrook

    BEWARE

    I guess this was too powerful for my chevy malibu’s battery. Took on a camping trip to blow up the air matress and it completely killed my battery (less than a month old battery) and left us stranded. Had to call triple a to save the day.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 22, 2024
  11. Jimmy P

    MUST HAVE

    IF YOUR CAR DOESN’T HAVE AN AC OUTLET THEN YOU NEED TO GET ONE OF THESE INVERTERS. THEY COME IN HANDY FOR ALL KINDS OF DEVICES AND THEY ARE SMALL ENOUGH TO FIT ALMOST ANYWHERE. WORKS GREAT!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 22, 2024
  12. Jeffrey J. Dunn

    Fails when battery is at 12.2 volts

    This inverter works well enough when the car is running or the battery is 100% charged. Unfortunately, it fails when the battery drops to 12.2 volts, which is well over 50% charge. Good inverters cut off at 10.5 volts

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 19, 2024
  13. Martin

    Didn’t work!

    Unfortunately this didn’t work in my Tesla Model Y. Went camping and bought this to blow up a few things and unfortunately it did not work. I should have tested it prior to the trip. So I give it a 3/5 stars

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 18, 2024
  14. Yess

    Nice

    I like it

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 18, 2024
  15. Mark Monroe

    Bestex 300w inverter

    Loww quality product. Save your money and get a better one.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 16, 2024
  16. Marc Sweet

    Simple power needs

    I’ve only used this to pump up an air mattress while camping, but it did that without fail. You could also charge everything at once if you had the right charger connected to this. I think it’s a good unit and better than just running a cheap truck stop plug out of the 12 volt. I haven’t tested it to the max, but it seems to have enough features to not threaten the integrity of the electrical systems of which it is working with

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 15, 2024
  17. DEBORAH L BELL-HARRIS

    Car charger adapter

    Awesome product

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 12, 2024
  18. Chris guajardo

    Power extender

    Works

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 11, 2024
  19. Amazon Customer

    Works well

    Works well, USB ports are strong enough to charge devices, small and light weight. I use for charging batteries for power tools, no problems

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 8, 2024
  20. Patrick M.

    Nice, as expected

    has lasted 3 years

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 7, 2024
  21. chasity

    A must have!

    It work great!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 6, 2024
  22. April Raber

    Great product

    Took it for 3 days of camping and used it for blowing up air mattresses (too often), cpap machine, charging phones and watches. Worked perfectly for all our needs!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 4, 2024
  23. Lil Bo Peep

    Burned the wiring

    It burned the wiring in my car (the fuses were fine) and now I have to get my car serviced and pay god knows how much

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on September 2, 2024
  24. Edgar Guzman

    Good IF you hardwire it to your battery or car fuse panel

    Cigarette lighters are limited to 20A (240 watts). I actually ruined my cigarette lighter because I thought I’d be slick and slip a 25A fuse in my truck to extract the full 300 watts capability (in spite of fact that I bought this to run a 225 watt battery charger) Well…even at 20A, the cigarette lighter plug got so hot that it actually melted my back end of the outlet in my truck, where the 12v OEM plug connects into the main wiring harness. This resulted in fuses shorting out the second I would replace them. $20 later, I had the plug replaced in my car. Since this inverter has its own on/off switch, I snipped the plug off, put on ring terminals and a fuse holder, got a 25amp fuse on, and hardwired it. I figured that I’d manually shut this thing off as needed. That made go from “hate it” to “love it.” Minus one star because it blew my 12v outlet in the truck and made me spend $20 and an hour to fix.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 31, 2024
  25. Alejandro Nava

    Good product

    Useful. I was running without problems for 5-10 hrs with a load of 200 W (Laptop charger)

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 31, 2024
  26. Jeremiah Donaldson

    Lasted 4 years

    This thing finally gave up the ghost, but feel I got my money’s worth out of it. May tear it apart and see if there’s a fuse or anything I can fix inside of it (but doubt it’s fixable). It was used on a line running to two 100 w solar panels and a 100 w turbine to power the internet modem and wifi during storm power outages and to charge phones, ecigs, and lawn mower batteries. I probably got up to x10 its cost in ‘free’ power out of it over the 4 years. Recommended, will probably buy another.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 30, 2024
  27. Ashley Wieben

    Didn’t work when I took it out and plugged it in

    Very disappointed this didn’t work. I bought it ahead of time for a work trip and just tried to use it and it didn’t work 🙁

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 29, 2024
  28. Mark Klockars

    WORKS GREAT!

    TOOK THIS CAMPING AND IT CHARGED ALL OF OUR DEVICES AS WELL AS CONSTANT POWER FOR OUR PORTABLE STEREO ALL NIGHT!

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 27, 2024
  29. C. Clausen

    Works great

    This worked great on our trip. It has an on off switch, which was really handy. We would recommend it.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 26, 2024
  30. Jeff P.

    Worked as expected

    Worked as expected

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 25, 2024
  31. ConsciousConsumer

    Worked once

    It worked the first time I used it. Tried using it again recently and the outlets didn’t work only the USB ports. Quality and longevity bad. Would not buy again.

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

    Cumplió mis expectativas

    Excelente

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 23, 2024
  33. Suzanne

    Great Inverter

    Very compact in size but worked well for me while camping. I success with plugging it in to both a battery pack and my vehicle. I used it to charge my phone and to charge my CPAP machine!

    Variation: Size: 2 – PD 65W / Reviewed in the United States on August 20, 2024
  34. Andcarweb

    buen producto

    Es un buen producto calidad precio, me ha funcionado muy bien, pensaría en cambiarlo después por uno de mayor cantidad de watts.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 20, 2024
  35. Priya Saini

    Good Product for Car Laptop Charging

    We really like this product as it’s really useful when you are driving for a long and need laptop to use it let your laptop work wherever you go.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 19, 2024
  36. Orange Cowboy

    quieter than the 150w

    I had the 150w for a few years and it was great. I needed another inverter and bought this 300w. Surprisingly it is quieter than the 150w

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 18, 2024
  37. Jay

    So far so good.

    Needed for keeping my laptop charged while in car. So far doing a great job. Did not have any issue with fan noise or overheating. Will keep an eye on that to assure it won’t start acting on me.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 17, 2024
  38. Robert A. Staton

    Very tiny.

    The size of these things keeps getting smaller. I use mine to run a Starlink dish and router off of a lithium battery, 24/7/ 365. The router only needs probably less than 100 W.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 13, 2024
  39. Nicole Vivante

    Don’t waste your money

    Ordered this is Feb and it broke after a handful of uses in June. The seller claims to have a 5 year warranty. Well, I have called and left them at least 10 messages to replace my item that is under warranty and they haven’t called me back. I’ve called upwards of 20 times and have never had anyone answer the phone. I called amazon for help and they were also useless, couldn’t help me or do anything at all. Don’t waste your money or time on this

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 12, 2024
  40. LaDonna Nickason

    Love this

    I gave it to my daughter to use. She’s the one that has to do school work on lap tops sometimes

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 11, 2024
  41. Amazon Customer

    works great

    good price, used it every day for a few weeks now and it works great.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 10, 2024
  42. StuffBuyer0001

    Only ONE Problem

    It’s great for what it is. The 12V socket limits its available current, so things charge pretty slowly. But it works. Pretty durable feel for its price, and the cord is long enough. The problem is a very loud high pitched whining noise from inside. Somewhere in the power supply circuit I’m guessing. I’m hoping it doesn’t burn out soon or… burn up…

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 9, 2024
  43. Car_Guy

    7 Year Review

    You need one of these in your life. This thing has seen consistent use over the past 7 years. And it has never let us down or skipped a beat. The ability to plug in multiple phones over a long road trip is unbeatable. I’ve even used it to charge a laptop while driving (though I wouldn’t recommend having other things plugged in at the same time). Excellent device with extremely high utility.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 8, 2024
  44. Michael Smock

    broken within 2 months

    heard good things about this product, seemed to take a dump on me after a month and a half and that is with not using it everyday. i am unable to charge my phone using either the usb port or the plug i’ve used different cords and different 12v outlets and still nothing just disappointing tried calling the company and every extension went straight to voice mail. don’t waste your money on this product

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 6, 2024
  45. Chris Smith

    Stopped Working after a few time of use

    I like the product initially before it just stopped working. Bought this in case of an emergency. I guess it’s best to know this product wouldn’t last during an emergency. Disappointing

    Variation: Size: 2 – PD 65W / Reviewed in the United States on August 6, 2024
  46. Rick

    Perfect performance and quiet

    Great product and great price

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on August 4, 2024
  47. Karen

    Bought 2

    These are Great for me. I work remote and can take my laptop in the car on road trips and fully keep the laptop charged.

    Variation: Size: 2 – PD 65W / Reviewed in the United States on August 2, 2024
  48. Bien Yen

    Great Product

    Works well

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on July 31, 2024
  49. Stroiker

    Inverter

    Not exactly what we were looking for. Did not work.

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on July 31, 2024
  50. Luis nunez

    Execelent

    It is cover all my expectations

    Variation: Size: 1 – Power Inverter / Reviewed in the United States on July 30, 2024
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