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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

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  • 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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78%would recommend to a friend

Customers are saying

Customers are impressed with the power output and overall performance of the POWER 500 Watt Power Inverter, especially noting the effectiveness of the USB charging ports. The device is also appreciated for its ease of use in smaller vehicles and reasonable price. However, some customers have reported concerns about excessive noise and, in a few instances, a strange smell.

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 11 Showing 201-220 of 320 reviews
  • Rated 5 out of 5 stars

    Good buy

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

    Incredible inverter and battery booster and a great value

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

      Thank you for the outstanding review and for choosing Cobra! cedarelectronics-cobra

  • 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.

    Bought this for road trip to plug kids’ Switches in and worked wonderfully. Could charge two Switches and two controllers simultaneously. Do wish it had a longer cord for the plugging into cigarette lighter.

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

    Great inverter for the price

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

    Our daughter was driving cross country and asked for a small inverter. I looked them all over and found this one at BestBuy and decided to try it. It works great. It has long cords for both the cigarette lighter adapter inside the car as well as direct to the battery. Definitely recommend!

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

    Low fan noise. My unit had issues.

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

    I had issues with my particular unit. Not sure if it was due to trying to pull too much power or a faulty unit, but it seems to have damaged a rental vehicle’s electrical system. Take this with a grain of salt; it’s entirely possible it was due to my negligence rather than the product.

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

    Works great for charging devices

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Still working great, has an auto cooling fan that kicks on if it gets too warm in the summer, use it daily!

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

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

  • Rated 4 out of 5 stars

    Handy item

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

    I really like this product. It is in my opinion very handy

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

    Worth the money

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

    I like this product, it has kept my electronics charged for me.

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

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

  • Rated 3 out of 5 stars

    Trips my car breaker

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

    Doesnt stay powered on long enough for me to test or use. Possibility a limitation of my car's cigarette lighter plug and maximum amperage. Will try direct connect to battery next.

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

    Great and compact

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

    I liked that it stored a small amount of energy even after turned off. Enough to charge phone or speaker. Doesnt throw random fault alarms like other inverters that ive had. Great product

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

    Grate product love it.

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

    I have this on my work vehicle, and it's the best inverter ever. Works great, and never had any issues with the battery.

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

    Charging my laptop on the go.

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

    I wish the cable for the for the electricity was longer.

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

    Very user friendly inverter.

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

    Item was purchased for temporary/portable use but it's screw down mounting feet easily allow for a more permanent install. Worked flawlessly and the usb ports nice feature.

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

    Cobra Power Inverter

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

    Works like a charm for charging my iPhone 12 Pro Max, and any other devices I have that do not have standard plugs germane to vehicles. I highly recommend this inverter.

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

    Dc to ac

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

    Thats good for long tourist and also use personal good

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

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

  • Rated 1 out of 5 stars

    Not worth it

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

    Had to give it one star but don’t deserve any stars. They should rename from cobra to crap. The first one did not work. They gave me a second one but this time I tried it and it worked but as soon as I connected a device it stopped working. Do not do not do not buy cobra.

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

      We appreciate your valuable feedback. Your Power Inverter provides five levels of protection. Auto-shut off will occur when the safe operating temperature has been exceeded, auto-shutdown will occur if the DC input exceeds safe operating levels, the inverter will automatically shut off to prevent a dead battery condition, the inverter will not operate if connected incorrectly to the power source, and will sound an alarm to indicate a low battery voltage condition. You can find detailed descriptions in your owner's manual. Should you require assistance, please contact us at 800-543-1608. Thank you. cedarelectronics-cobra

  • Rated 1 out of 5 stars

    Junk crap

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

    Absolutely junk. Blew every fuse in my car. When i hooked up to my battery and then it just wouldnt do anything except charge a cell phone. DO NOT BUY THIS

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

      We’re sorry to hear about your experience. It may help to check the connections and make sure the inverter is installed correctly for your car’s setup. If you need help, please do not hesitate to contact us at 800-543-1608. cedarelectronics-cobra

  • Pros mentioned:
    Usb

    Rated 2 out of 5 stars

    Cheap power inverter over priced

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

    Does not last long and is cheap. If your not using it for anything that can pull power you should be good. Its great for charging phones but thats it.

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

    Awesome convertor

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

    This came in handy inside the car . The converter is better being attached to the battery.

    I would recommend this to a friend
  • Best Buy Employee

    Rated 5 out of 5 stars

    Awesome

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

    Absolute beast for road trips to charge anything fast.

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

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

  • Rated 5 out of 5 stars

    Great for road trips

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

    This was the perfect item for my road trip. It enabled me to charge phones and boil a smail kettle of water in my car.

    I would recommend this to a friend