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Customer Ratings & Reviews

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Customer reviews

Rating 4 out of 5 stars with 335 reviews

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Rating by feature

  • Value

    Rating 4.1 out of 5 stars

  • Quality

    Rating 4.1 out of 5 stars

  • Ease of Use

    Rating 4.2 out of 5 stars

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Cons mentioned filter

78%would recommend to a friend

Customers are saying

Customers are pleased with the power output, overall performance, and USB charging capabilities of the POWER 500 Watt Power Inverter. The inverter is also praised for its ease of use, compact size, and reasonable price. However, some customers have noted that the inverter can be a little noisy. Additionally, a few customers have reported an unpleasant smell and concerns about battery life.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 17 Showing 321-335 of 335 reviews
  • Pros mentioned:
    Power output, Size

    Rated 4 out of 5 stars

    Amazing

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Awesome!!! Alot of power for such a small inverter. I have my flat screen plug into it in my semi..

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance, Usb

    Rated 5 out of 5 stars

    No regrets

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great purchase! I’m definitely happy with my purchase of this product, does exactly what it says.

    I would recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      It is great to hear that you are happy with your purchase. Thank you so much for choosing Cobra! cedarelectronics-cobra

  • Pros mentioned:
    Power output

    Rated 4 out of 5 stars

    Great Invertor

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My only problem is my car seems unable to run anything 300 Watts at the moment. In a vehicle that operate this invertor it works amazingly and can even run a gaming laptop in turbo mode

    I would recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      We are sorry to hear you've had issues. Thank you for the great review of our product. Should you require assistance, please feel free to contact us at 800-543-1608, option 3 on the menu. cedarelectronics-cobra

  • Cons mentioned:
    Noise level

    Rated 4 out of 5 stars

    It's ok

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My old Cobra seemed to work a little better than the new one, this one makes a beeping noise every time I start my truck even though it's hard wired.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Works as it should!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This thing is amazing works as advertised and runs great my only issue is how short the cords come with the product it leaves you very little room for flexibility and placement.

    I would recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      Thanks for the awesome review! We're glad to hear it’s working great for you and we'll pass your feedback along to our team. We appreciate you choosing Cobra! cedarelectronics-cobra

  • Pros mentioned:
    Power output
    Cons mentioned:
    Battery life

    Rated 5 out of 5 stars

    Awesome product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked perfect to blow up a matrees while camping. Be sure to disconnect after using or it will kill your car battery. Great product.

    I would recommend this to a friend
  • Pros mentioned:
    Power output

    Rated 5 out of 5 stars

    Inverter

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I made a trip out of State and back in really cold miserable conditions a day ago. And this Cobra inverter made the trip out of State a breeze. I was able to charge and had the option to use it in a emergency for other gadgets also. Perfect for a Emergency.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Works as expected

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I used it one week for more than 10 hours each day, and it worked great! no issues at all

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Great buy

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good product for the money Works great Did the job i bought it for

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Car plug converter

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It worked but not for what I wanted it for the fule blow a lot even in the battery

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Will not charge a laptop

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Just got this for traveling. Thought i could plug it in to charge my laptop while driving. As soon at you turn turn it on and plug the charger in it beeps and goes into power failure mode. Also made my laptop power pack should like it was sizzeling. The raiting on my power supply was 200w so I got a 500w inverter. Might be ok for small devices but not for larger electronics.

    No, I would not recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      We are sorry you are experiencing issues. We'd love to take a better look so that we can provide assistance. Please contact us at 800-543-1608. Thank you. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    PLUG DOES STAY IN! GARBAGE!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The power plug cigarette lighter is too long and does not stay in the socket! What is with China and always making garbage products? This is made in China and I recommend do not buy this at all! The Chinese can never get this stuff right. The simplest things they screw up. Chinese products, especially this, is garbage. You cannot use it, especially in a moving car, because the outlet plug does not stay in the socket. It keeps beeping and it stays on only if you hold it in there or just by pure luck. The moment you touch it, it comes out.

    No, I would not recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      Most likely the issue was due to the vehicle CLA jack dimensions are out of tolerance causing a loose or intermittent connection to the power inverter. An improved solution is to hardwire the inverter directly to the cars battery which will allow for the inverter to operate at it's full rated AC output level. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Pice of junk

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a pice of junk would not work with a 35w dock just would stop working then have to replug and work for 5min then stop

    No, I would not recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      Most likely the issue was due to the vehicle CLA jack dimensions are out of tolerance causing a loose or intermittent connection to the power inverter. An improved solution is to hardwire the inverter directly to the cars battery which will allow for the inverter to operate at it's full rated AC output level. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Dont buy it

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Not a good product Over heats Cuts off I regret purchasing it

    No, I would not recommend this to a friend
    • Brand response from Cedar Electronics Team
      Posted .

      We're sorry to hear that you are having issues with your Cobra power inverter. For additional support, please contact Cobra customer support at 1-800-543-1608 or online at https://www.cobra.com/pages/contact-us. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Disappointed

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Clearly had been a returned item. It didn't work. How disappointing.

    No, I would not recommend this to a friend