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5V Power Supply Adapter, 100-240V AC to DC for LONGSING (5V 15A)

4.1 out of 5 stars (741)
Currently unavailable.
We don't know when or if this item will be back in stock.

About this item

  • 400 W Continuous Power Handling
  • 5v USB output
  • 2 Grounded AC Receptacles
  • Thermal Shutdown and Reverse Polarity Protection
› See more product details

Safety and product resources

Safety documents

What's in the box

  • cigarette lighter cord, direct-to-battery cables

    • Product information

    Product Dimensions 6.45 x 4.17 x 2.59 inches
    Item Weight 2 pounds
    ASIN B001RNOHBC
    Item model number 12V 10A (2 Pcs)
    Customer Reviews
    4.1 out of 5 stars (741)

    4.1 out of 5 stars
    Is Discontinued By Manufacturer No
    Date First Available February 28, 2009
    Manufacturer COBRA DIGITAL

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here. [PDF ]

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    5V Power Supply Adapter, 100-240V AC to DC for LONGSING (5V 15A)

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    Product Description

    This inverter provides household power on the go! It converts battery power to 120 V AC household power, allowing you to power up office equipment and household appliances from your vehicle. It also has a USB output, ideal for using/charging most small video games, an IPod®, a Blackberry®, mobile phones, and many more USB devices. Cigarette lighter cord and direct-to-battery cables are included. This unit is ideal for laptops, 13" TVs, video games, CD players, DVD players, cellular phone chargers, and much more!

    Customer reviews

    4.1 out of 5 stars
    741 global ratings

    Customers say

    Customers find the power inverter works well for laptops and phones, includes battery connection cables, and offers good value for its 400-watt capacity. The lifespan receives mixed feedback - while some report it runs for 8 days continuously, others mention it stops working after 1-2 hours of use. The noise level is also mixed, with some finding it pretty quiet while operating and others describing it as little noisy. Power delivery receives mixed reviews, with some saying it provides plenty of power while others note it doesn't deliver the promised wattage.

    Select to learn more

    Works wellQualityBattery powerValue for moneyPower sourceLifespanNoise levelPower
    322 customers mention "Works well"279 positive43 negative

    Customers report that the power inverter works well, particularly for powering TVs, laptops, and phones, with one customer mentioning successful use in a solar lighting system.

    "Works great. We use when we're camping. Very easy to hook to the battery. I haven't tried the light socket yet but the battery hook up works great." Read more

    "Got this on a ligtening deal and works well. Was looking for one for a while and didn't want to spend big bucks. Love the lightening deals." Read more

    "This was a gift and works as advertised - I would like a more easily found list of devices it could handle and a more comprehensive way to calculate..." Read more

    "Worked great, used it a few times to run some lights breifly. Was using it to power a drill in the shed, sparked, smoked and quit working...." Read more

    162 customers mention "Quality"137 positive25 negative

    Customers find the power inverter to be of high quality and suitable for their needs.

    "Great product! Easy to use and compact. I really like the USB port feature on it. It works great in my camper to watch DVDs and charge my cell phone." Read more

    "Good product for good price, it's very useful, silent and small, y plug my laptop vostro 1000 and de cellphone inside the car, at home i use to plug..." Read more

    "Great power inverter, will definitely work on cell phones, lab tops , any thing of that nature- if yoyu need it for somethjing stronger it does not..." Read more

    "Great Inverter, and can handle exactly what its rated for...." Read more

    119 customers mention "Battery power"90 positive29 negative

    Customers appreciate the power inverter's battery power capabilities, as it includes cables for connecting directly to the battery and can charge cell phones and computers.

    "...It keeps my laptop and phone charged especially when there are in standby. I'm on the road on average for 8-9 hours so very handy...." Read more

    "...It works great in my camper to watch DVDs and charge my cell phone." Read more

    "...It has a low voltage shutoff so I haven't run my battery out yet." Read more

    "Perfect other than the plug sockets being too close that you can't plug wall chargers for camera batteries, which is the main reason I got it for...." Read more

    103 customers mention "Value for money"96 positive7 negative

    Customers find the power inverter to be excellent value for money, describing it as a great deal for its 400 watt capacity.

    "...This thing rocks and at a great price. If you don't know how to rig it under the hood then it will run you about 80 bucks for your typical install...." Read more

    "Good product for good price, it's very useful, silent and small, y plug my laptop vostro 1000 and de cellphone inside the car, at home i use to plug..." Read more

    "Great value. Lots of power. The USB port is very handy. I wish it had two of them. The fan doesn't come on unless it's drawing a lot of power...." Read more

    "Reliable Product- Good Buy!..." Read more

    78 customers mention "Power source"73 positive5 negative

    Customers are satisfied with the power inverter's ability to power various devices, including laptops, TVs, CD players, and modems and routers.

    "...While it worked, it was able to power my laptop without cutting out on me, my older inverter is only 160W, so it cannot handle a laptop...." Read more

    "...I bought it to use with my solar panel system. I am able to run power tools (small amperage), lamps and charge laptops...." Read more

    "...It powers our tv, light, and charges our phones...." Read more

    "...with clamps for direct hookup to a battery as well as a cigarette lighter adapter. Works extremely well with very low battery draw...." Read more

    137 customers mention "Lifespan"42 positive95 negative

    Customers have mixed experiences with the power inverter's lifespan, with some reporting it works well for a year and is dependable for their purposes, while others mention it going completely dead or shutting down after about 20 minutes of use.

    "I hardly used it. It died. Too late to use warranty. It decided to die when Hurricane Sandy came by for a visit. Money poorly spent." Read more

    "Works for small appliances but shuts off when I tried to use a heat gun." Read more

    "Works well. Solid and durable. Had it for a while with no issues unlike others I've tried. Run my laptop off it in my car...." Read more

    "I had this for less than a year..it shorted out ...waste of money...I think I'll stay away from cobra products..quality gone down.." Read more

    103 customers mention "Noise level"57 positive46 negative

    Customers have mixed opinions about the power inverter's noise level, with some finding it pretty quiet while operating, while others report noticeable fan noise and a high-pitched beeping sound.

    "Quiet and works like a champ. Also like its compact size. Arrived on time and terrific price. Would recommend to anyone needing small power...." Read more

    "It's used to power a laptop on road trips. Works well. Fan is a little loud when it kicks on but only runs intermittently" Read more

    "The quality was excellent! It looks nice and is very quiet compared to some of the other ones that I have tried." Read more

    "Fan is a bit noisy, however i bought a much quieter fan and now you cannot here this thing run at all." Read more

    64 customers mention "Power"39 positive25 negative

    Customers have mixed experiences with the power inverter's performance, with some reporting plenty of power and a 400-watt output, while others note that it does not deliver the wattage promised and only requires 165 watts.

    "The inverter is good. It has plenty of power. It works as advertised. So, why only 3 stars? - The cigarette adapter plug is flimsy...." Read more

    "This thing wasn't even able to power up a Playstation 3. Not enough power. Not enough peak power. Would not recomend it to run much of anything." Read more

    "...I do not use but one at a time normally, so this gets 4 stars for good power right from the lighter socket of a Honda CRV." Read more

    "Great value. Lots of power. The USB port is very handy. I wish it had two of them. The fan doesn't come on unless it's drawing a lot of power...." Read more

    Better than any other I've used
    5 out of 5 stars
    Better than any other I've used
    As a technician in the field, I have many things I need to keep powered. From a laptop to various testing equipment and cell phone chargers, even cordless drill battery chargers. No other inverter I've tried has been able to handle what I've thrown at this one. I did learn 1 very important thing - the inverter only works as good as the power going into it. Spend the time to connect it directly to the battery and you will be happy with its performance. I just bought this 1 because my previous 1 had been stolen from my truck. The price value is excellent! You will not be disappointed.
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    Top reviews from the United States

    • Boomer
      5.0 out of 5 stars Works for me....so far...
      Reviewed in the United States on December 14, 2014
      Verified Purchase
      Dec. 19, 2015...at over 1 year still working great...Upgraded to 5 stars. I have 100ah battery, on a hand truck. Can roll outside, and use 2.2amp Weed Whacker.

      May 13, 2019... still working great...5 years...
      Oct. 30, 2015...Still working great.

      UPDATE: Accidentally charged my battery for two days, so it got fully charged,....I got TWENTY cups of tea...and it did not go down past 12Volt!!! Super!!! Inverter working great...Jan 23rd..2015. If I had realized the battery needed to charge up to 13.8 volts to be fully charged, I could have used the other inverters...but still, if HAVING to go below 12v, their alarm would have gone off...the Cobra does not go off until around 10.5-ish...so that is great.

      One star off for the 500ma USB port. Some have 2.1a for charging tablets...not really a biggie for me. I have 12v 2.1a Car charger for that if needed...but still...THESE DAYS, it should have been upgraded. Other than that, IT IS PERFECT SO FAR.
      I have a 14-15 year old generic Chinese 400w inverter, I got it for my portable jumpstarter and it works well, however, it shuts down at just under 12v. I only get 5 1/3 uses with a 300w one cup coffee maker from 13v or so full charge. So...tried to find a 400w inverter that, like my 1500w OSP Tiger Claw, goes down to 10.5v before shutting down.
      Tried PowerBright. Nice inverter, but squelched like a Banshee at just under 12v...low voltage alarm is set too high. Only got 5 cups out of it too. NEXT...tried the Thor 400w, which also has a 2.1a USB port, does not need to be ON to use, but it too shrieked loud at just under 12v...(sigh).... The back terminals on the Thor are also too close together and have a slight notch, so they don't fit bigger cables with wider O-ring terminals.
      OK...tried this Cobra....I just got SEVEN uses and no noise under 12v....SWEET....This is the One for me!!! SO FAR...
      Fan only comes on when needed...less noisy than my generic Chinese old thing. I would not mind this on a trip.
      My use is a 100ah 12v RV Deep Cycle Battery. I can solar charge it. Also Battery Tender type charger. I use it for a 300w one cup coffee maker....mostly for tea, and hot cider.
      With the included alligator clips I get 244-249w...82-83-ish efficiency...Hardwired with 4 gauge cables I get 252-254watts...so better connection...and a little better efficiency. The PowerBright was 90% at 279-ish, my Old inverter is also 279-ish...and the Thor was lower at 250 or so...So the Cobra is comparable....and 14 bucks CHEAPER!
      Not a bad deal. Hope it lasts.
      UPDATE:Dec 15....Got 10 cups with my one cup coffee maker. Voltage dropped fast below 11.5 to 11volts, only got about 1/4 or 1/3 cup on the 11th use. Still could not be happier. I get twice the cups with this inverter before low voltage alarm, and that was my goal. OK...4.5 Stars...
      3 people found this helpful
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    • brandon
      5.0 out of 5 stars does the job
      Reviewed in the United States on June 26, 2015
      Verified Purchase
      great little unit shipping was great thanks Amazon....everything arrived packed well undamaged and in original packaging...this little inverter hooked right up and works well for my needs so far...i have not had this unit long so i can not attest to how long this thing will last under a good load for a period of time but i have used it to charge my phone and a few other battery operated devices no hard use on it yet to this point but all is holding up well so far should last a good while...i have noticed their is no replaceable fuse attached to this unit that i have seen...unless it is built in to the unit and is not replaceable???? because the case of the unit says (not user serviceable do not open unit) or something to that nature....so should i add a fuse to the + lead just to be safe?????? either way it function as it should in the aspect that it powers 120-v AC appliances off of a 12v DC power plant.....however the little fan in there is on a funky little timer or something it seems to kick on for about 2 seconds and them back off for 2 seconds and then repeats until unit is no longer under load or has cooled off....i wonder if this is normal seeing as most other inverters i have used the fan stays on continuous for a period of time...or is it just a power saver kind of mode for the fan...like i said i have not used it much with a heavy load yet to see if the fan kicks on and stays on if the unit heats up more...i may try and put a heavier load on the inverter just to test it out in the next few days will update if i notice anything else about the unit not stated in my review
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    • Eagle
      5.0 out of 5 stars Great product and a great price !
      Reviewed in the United States on December 12, 2010
      Verified Purchase
      I bought this product and installed it in an enclosed trailer that I use for transporting remote controlled airplanes in. My goal was to have general lighting, a radio, small amp battery chargers and possibly be able to run a small hand tool from it. I installed (1) four foot long florescent light and (1) two foot florescent light and the radio. To see how it worked I turned everything on and then tried a dremel tool with no problem. I then tried a jigsaw and that even worked.

      For the reason I bought it it is working perfectly and I couldn't be happier about a product that costs so little.
      I know at 400 watts it won't operate any heavy duty appliances but that wasn't my intended purpose. The quality of the product feels great and while others have commented on having difficulty mounting it, I did not find that to be an issue at all. When the fan does run it is so quiet that you hardly notice it.

      Thanks Cobra for continuing to make fine quality products.
      2 people found this helpful
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    • Bryan Willis
      2.0 out of 5 stars When it works, its beautiful. But open up a cobra, and the guts aren't so pretty
      Reviewed in the United States on September 23, 2011
      Verified Purchase
      I had just went through using a black and decker 400watt power inverter. Indeed, it had some issues with continuous 250watt loads. But, the unit for what it was and what it could do, was decently made.

      And here comes the cobra 400watt inverter. The range of what it could power, probably is much much closer to 400 continuous watts. Includes a cigarette lighter cable, and 2 very small battery clamp cables. But, heres the thing. The quality control of these are HORRIBLE! First, the negative plug bolt actually came out entirely on my just at random. Something that should NEVER happen. Then, come to find out, all the soldering and crimp jobs inside the unit were all faulty. Not even burnt, but looked to be from a novice solderer. Even started sparking terribly at one point, even with nothing on. Ended up having to send it back. Even for as cheap as it is, i would expect it to be half way decently put together. Should still work.

      Problem is, its not just the 400 model. I've seen people, and reviews have these same issues with other cobra units. Some that came even worse so than mine. My reccomendation? Spend the extra money, and save yourself the time and headaches.
      5 people found this helpful
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    Product Summary: 5V Power Supply Adapter, 100-240V AC to DC for LONGSING (5V 15A)

    From LONGSING

    4.1 out of 5 stars, 741 ratings

    Customer reviews

    Price

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    About this Item

    • 400 W Continuous Power Handling
    • 5v USB output
    • 2 Grounded AC Receptacles
    • Thermal Shutdown and Reverse Polarity Protection

    Product Description

    This inverter provides household power on the go! It converts battery power to 120 V AC household power, allowing you to power up office equipment and household appliances from your vehicle. It also has a USB output, ideal for using/charging most small video games, an IPod®, a Blackberry®, mobile phones, and many more USB devices. Cigarette lighter cord and direct-to-battery cables are included. This unit is ideal for laptops, 13" TVs, video games, CD players, DVD players, cellular phone chargers, and much more!

    Important Information

    Visible screen diagonal

    13" / 34 cm

    Product Guidance & Documents

    User Manual (PDF)

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