Winter SaleEnds 1/19. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

Your price for this item is $61.99
The comparable value price is $69.99

Customer reviews

Rating 4 out of 5 stars with 320 reviews

Rating Filter

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

Pros mentioned filter

Cons mentioned filter

78%would recommend to a friend

Customers are saying

Customers commend the POWER 500 Watt Power Inverter for its reliable power output, convenient USB charging, and overall performance. Users appreciate its ease of use, reasonable price, and compact size, making it suitable for various applications. However, some customers have reported concerns about excessive noise and potential battery drain.

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 4 Showing 61-80 of 320 reviews
  • Rated 3 out of 5 stars

    Just ok

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

    It work ok trips out if you get anywhere near max watts find a larger wattage if you need for curling iron or haircare

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

      Thank you for your feedback. For each device, check your battery’s reserve or amp-hour capacity. If you need help, please do not hesitate to contact us at 800-543-1608. cedarelectronics-cobra

  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    Works great

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Same size as my previous 100w inverter. Quiet, easy to use.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 4 out of 5 stars

    Wish it had longer cord

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very heavy duty, Works amazing, Wish it had a longer cord

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

    Rated 4 out of 5 stars

    Good inverter

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Has been a good inverter to charge my computer in my truck for over a month now.

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

    Rated 5 out of 5 stars

    Cobra Power Inverter

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Provides reliable power to operate and charge my laptop when i am in the field and also charges my drone batteries.

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    It’s good if it’s not overloaded.

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

    It’s good if it doesn’t overload your car or if you don’t overload it.

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

      Thank you for your review and for choosing Cobra! If you have any questions about usage and requirements, please do not hesitate to contact us at 800-543-1608. cedarelectronics-cobra

  • Rated 4 out of 5 stars

    Pretty good purchase

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works pretty good!! The only downside is that the car plug is kinda cheaper so it doesn’t plug in very smoothly, and kinda slips out. I have to press it in really hard and make sure not to move the inverter so that I don’t accidentally move the cable or anything. A little finicky but works great once it’s plugged in properly.

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

    Rated 5 out of 5 stars

    Power Up

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This thing is great.. upgraded to this one from single.. big difference in power and recharging laptop on the road.

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

    Rated 5 out of 5 stars

    Inverter

    |
    |
    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good packaging, very easy to use and runs all that we need and more on trips.

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

      It is great to hear that you are happy with the performance and ease of your power inverter. Thank you for choosing Cobra! cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 5 out of 5 stars

    Great power!!

    |
    |
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This little cobra does everything you would expect and more. Runs my laptop and battery chargers on the job with items used thru usb plugs. Great product.

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

      Thank you for the great review! We are happy to hear that you are enjoying it! cedarelectronics-cobra

  • Cons mentioned:
    Noise

    Rated 3 out of 5 stars

    Fragile

    |
    |
    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It broke within two months. When it was working, it made a lot of noise. do not recommend.

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

      Thank you for your review. In order to assist you better, we need a bit more information. Please check a few things:

      1. Is the battery low and in need of charging?
      2. Are the battery cables securely connected?
      3. Is there a loose connection in the 12V vehicle accessory port (if you are using a 12V power cord)?
      4. Is the appliance drawing excessive power from the battery?

      Feel free to contact us at 800-543-1608. We’re happy to help! cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 4 out of 5 stars

    Works great

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Ise it to charge my lipos and all battery operated products while in car

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

    Rated 5 out of 5 stars

    Works well

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Charge my phone, computer and works well. Can't ask for more. Keeps devices charged on the go.

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

      Thanks for the great review and for choosing Cobra. cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 3 out of 5 stars

    It is ok power inverter

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It struggles to start a small fan. Otherwise it works with laptop chargers, small tv etc

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

      Thank you for choosing Cobra. The POWER 500 inverter is ideal for small fans. To better assist, we would need more details. Please contact us at 800-543-1608. We're happy to help and look forward to hearing from you! cedarelectronics-cobra

  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    12 volt inverter

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    For the money I feel this is a very good product. It is very easy to operate. No problems so far!

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

    Rated 4 out of 5 stars

    Good device

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    good device for the money. Had the right plug in and was on sale!

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

    great inverter

    |
    |
    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    very nice, compact inverter. Quiet operation and good power capacity for it's size.

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

      Thank you so much for the great review! cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 3 out of 5 stars

    Mr

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    If you connect this directly to a car battery this unit works well. However...when operating on cigarette lighter it would not power my MacBook ProSpecs say it should...it didn't. The cooling fan is very noisy.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Power output

    Rated 5 out of 5 stars

    It works very well

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Powerful and convenient. I would recomend it without hesitation.

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

      Thank you for the fantastic review and for recommending our product! cedarelectronics-cobra

  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Gets the job done

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Happy to say it Works as expected. Gets the job done!

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

      Thanks for the amazing review! cedarelectronics-cobra

Sponsored