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Customer Ratings & Reviews

Your price for this item is $59.99
The comparable value price is $69.99

Customer reviews

Rating 4 out of 5 stars with 316 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

77%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 14 Showing 261-280 of 316 reviews
  • Rated 5 out of 5 stars

    Outlet

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

    Purchased for my daughter. She says it does what it's supposed to do.

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

    Excellent inverter

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

    Excellent inverter. Definitely recommend it to anyone that needs one.

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

    Good idea...doesn't work.

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

    I was planning to use this in my Jeep to power a laptop computer. I travel a good bit and this would be a good source of power. It worked maybe 15 minutes. Then it started to beep an alarm as if it was overloaded....when it wasn't. I could turn it off and back on, and it would charge for a few minutes then alarm again. So I returned it.

    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 5 out of 5 stars

    Fast charger

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

    Fast charging of your computer while on the go! Works great.

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

    Annoying much too often beeps on bumps & more.

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

    this design needs work. I've had it installed for 1 week and although the connections in the back are secure every time I hit a bump or touch the unit it gives this annoying horrible beep. it does the same on start up and shutdown.. In it's defense it does charge fast but the drawbacks just don't make it worth it. Returning this one and getting something better (I hope)

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

      The beep sound after hitting a bump in the road may be due to a loose connection where the inverter CLA plug is attached to the cars CLA jack. Some vehicle manufacturers deviate from the SAE standard for CLA jacks and it's possible your cars CLA jack might be out of tolerance. To improve your experience with the inverter operation consider hard wiring directly to the car battery to eliminate intermittent power connections and will allow the inverter output at it's full 500 Watt rated output. cedarelectronics-cobra

  • Rated 3 out of 5 stars

    HUMMM

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

    Good, But Car adpoter doesn't stay on. LOL HAHAH SMH THANK YOU THO

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

    It's Junk, less than 1 star

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

    Total piece of junk. Don't waste your money. Bought a lesser inverter by the same company and it blew out first use. I exchanged up to the 500 it worked intermittently then quit. Got another one and it was dead right out of the box. I will return it and stay away from products by Cobra

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Cobra, Chinese for cheap junk

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

    It does not even hold up to charging a Dewalt battery unless hooked directly to the battery.. once was a good company with quality products.

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

      We are sorry you are not completely satisfied. We'd love to provide some assistance. Please contact us at 800-543-1608, option 3 on the menu. Thank you. cedarelectronics-cobra

  • Cons mentioned:
    Battery life

    Rated 1 out of 5 stars

    Dead

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Dead 2 months after purchase, worked great when it ran. Wont even turn connected to battery.

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

      I'm sorry to hear you are having issues with your inverter shortly after purchasing it. Please contact Cobra customer support at 1-800-543-1608 for additional help in finding out what the issue is with your inverter. cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 5 out of 5 stars

    Worth the money

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

    Works as expected. Additional cables are appreciated.

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

    Love it

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Awesome small power strip a must have for your car

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

    Power inverter terrible

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

    The power cord has been nothing but problems! This was purchased for a road trip and power inverter did not work! Tried in multiple vehicles and still didn’t work! Plug is too long for car ports and won’t make any good connections.

    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

    The worst

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

    This device is terrible. I would like to return this Item as soon as i get back in town. Ports don’t work at all

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

      We are sorry to hear this. The Pro 500 has been very popular and typically works well. We are available for troubleshooting at 800-543-1608, if you are interested. Thank you. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Works for 2 Seconds at a time

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

    Internal breaker makes it turn off pretty much right away. A few times it works fully but the slightest movement makes trips the breaker. I returned it the next day. Would not recommend to anyone.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Cheap Chinese made product

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

    Didn’t work out of the box. I bought it. opened it in my car. Plugged it in my lighter, and didn’t work. I tested my lighter plug, it worked. I thought I was buying a bargain, 500watts pet outlet x2 outlets = 1000watts of power but the product didn’t work at all.

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

      We apologize for your experience and would like to assist. It would be most helpful if you call us on our Customer Care line at 800-543-1608 Monday - Friday between the hours of 9 a.m. – 4 p.m. EST to replace your inverter and discuss whether the CPI500W is the best choice for your power needs. The CPI500W Power Inverter is designed for a maximum output of 500 Watts and cannot handle continuous 1000 Watts of power output. The Cobra Team can walk you through Cobra power inverter options based on your power needs. cedarelectronics-cobra

  • Cons mentioned:
    Smell

    Rated 1 out of 5 stars

    Inverter

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

    Have a burning smell the first day so I’m afraid to plug anything into it

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Cheap quality. Don't waste your time

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The plug got stuck inside my cigarette lighter outlet. Now I have to ask my mechanic to take it out

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

      We have never heard of this happening before, and are sorry to hear it. We'll pass this info along to our product team. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Does not work

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

    Have now two different times to get this product to work but the connection that plugs into cigarette lighter has to be manually held in place for it to work.

    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

    Broke after 6 weeks of use

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

    Purchase it, installed it, and it broke after 6 weeks of use.

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

      We are sorry to hear that you had issues. The Power 500W Inverter is designed to be durable. Please contact us so that we can get more details about the issue you are experiencing and better assist you. Thank you. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Returned

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

    Charger didn't fit my charge port in my car resulting in the inverter going on and off. I returned it.

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

      We are sorry to hear this. Should you require assistance locating a compatible charger, please feel free to contact us at 800-543-1608, option 3 on the menu. cedarelectronics-cobra