Quesvow Car Power Inverter 300W DC 12V to 110V AC Converter 4.8A Dual USB Car Charger Adapter-Blue

Have had the unit since January and it's no longer functional. When I plug it in my 12v car socket and then power the unit it on the LED briefly turns red and then goes out after a couple seconds with no power output from the USB or 120v connectors. It blows the 20a fuse in the car. And there's nothing plugged in to the supply on the secondary side so it can't be getting loaded down. Finally - the power supply has it's own 15a fuse so you'd think it would blow but that fuse isn't blown. So - now have to buy another unit and will definitely seek out another vendor.

It's been 3 months since I got it.. and 1 big trip and 1 week of occasional use after...At the beginning I used this inverter to charge my DJI spark batteries on the go... and worked perfectly, even having both power outlets working all together with the USB ports...​ I traveled from TX to MD for almost 3 days and everything was working as it supposed to.... after that I had it stored in the premium quality bag that comes with it...since 1 week ago I started using it again, but this time just for while I was commuting... I connected my Pixel 2 charger to the power outlet and suddenly one of the ports stopped working, after testing everything I realized that that outlet is not working at all... today I tried charging my drone's batteries with the only working outlet and realized that even after it shows as connected... The power is not enough to charge not even one battery... apparently, it had lost its power... this was my experience... I hope it will be useful to you...

I have been using the converter for about a month now and it has performed flawlessly. I maninly use it for everyday driving around the city and charging an iPhone. However, I have taken it on a road trip with constant use for 10 hours straight and had now issues. The most that I have had hooked up, was two cell phones in the USB charging slots, and a GoPro plugged into the 12v plug charging. It comes with spare fuses just in case, but I have not had the need for them. They is also a physical off switch, that way you can leave the converter plug in to the car, but still turn it off if needed. Mine stays in the on position all the time.

I bought this after reading about it in an article about must needed things to have during and after and hurricane.Since buying it we have not really needed to use it, until recently. Not because of a hurricane or any other disaster.... but because my husband had a work picnic to go to and wanted to keep our brisket warm for the ride to the picnic. I have to say it worked great! He was able to plug in our crock-pot to act as a warmer so the food was delivered warm and tasty!I have to say this thing has been sitting in my car for almost 8 months in the Florida heat and still works. Granted I kept in the compartment between our front seats, but even out of direct sunlight, cars in Florida become little hot boxes that can kill anything! I have seen things melt that are not suppose to melt in our cars!Thank you so much!

Arrived as advertised and in a timely fashion. My wife uses it to power her laptop, in my truck, to do her labs and charts during our 2 Hr. trips to Rehoboth beach. The trade off is that I can listen to "NPR" while she works. The inverter works beautifully and quietly (fan is quiet). I soon discovered that it needs to be on it's side to facilitate cooling. I tried it upright in a conveniently sized and deep console pocket but it got to hot. Laid it on its side, so the fan could breathe, problem solved. At 300 watts, her computer should come nowhere near taxing the inverter's capacity. I am more than pleased.

Out of the box I liked this product. My main gripe is that the outlet furthest from the USB ports no longer holds cables in well, making the port useless.Slightly annoying is that the outlets are too close together to use at once.It's quiet, and works well otherwise.

Plugged it in, on/off switch to on, red light comes on for a few seconds and then goes out. Changed to another power socket, same thing. No power.

I ordered this 3 days before Irma hit just in case and we ended up using it for 3 days to charge phones out of the back of our car. Thanks for sending it quickly, and thanks for having a good product! For those of you that see plugs and assume you can run heavy equipment off it...you can't. The plugs are just another option to plug small things into, this is not just an extra house plug coming out of your car, meant for phones, tablets and things of that nature.