BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Plug Adapter Outlet Converter (Blue)ClimatePartner certified

I purchased both this unit, the "BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black" (Model # MRI1511AU), and the "BESTEK 150W Power Inverter, DC 12V to 110V AC Car Inverter (Red Upgraded)" (Model # MRI1511L).I am posting this review on both product pages. Since the model names are identical apart from the letters at the end, I’ll refer to them that way.Short version:Although the specs are the same, and the prices nearly the same, this Dual USB "AU" version outperformed the “Red Upgraded” (“L”) version. (In addition, the “L” unit had something rattling loose inside on receipt.)More info:I plugged each unit, one at a time, into the 9v outlet in my car.I tested each unit by plugging in a small (20W) 2-speed motor, then switching it on low, high, off, high, low, etc. a few times each.Fan:- The fan was silent on this AU (box) unit; the fan apparently doesn’t kick in until cooling is needed.- The fan started immediately on the L (“red upgraded”) unit, gradually growing louder. It was, as other reviewers have noted, loud enough to be annoying in a quiet vehicle.Performance:- This “AU” box unit worked without difficulty: Running the motor was as seamless as when the same motor is plugged into an outlet.- The “L” unit worked … sort of. At first, the motor started up pretty much right away, switching from low speed to high without difficulty. But when I switched back to low speed, it stalled, recovering slowly. Same when I switched back to high speed. Then it worked fine again. Then it didn’t. I don’t know the cause, but it was as if the L unit was briefly overloaded when switching modes.Conclusion:- This “AU” unit gets five stars, at least for now: It works just fine, it’s simple, quiet, compact, and lightweight – just what I needed.- The “L” unit earns two stars: It works, sort of, but is inexplicably underpowered even though its specifications are the same as the “AU” unit.

I have been using the BESTEK 150W Power Inverter DC 12V to 110V AC Converter with a 4.2A Dual USB Car Adapter for some time now, and it has become an essential part of my travel kit. In fact, I'm so pleased with its performance that I've equipped all my vehicles with one. This power inverter stands out for its compact size, reliability, and ability to power larger laptops, making it a top-quality product in its category.One of the most striking features of this BESTEK inverter is its compact design. It's incredibly small and lightweight, making it easy to store and carry. Despite its size, it packs a punch, efficiently converting DC power to AC and providing enough power to charge larger laptops. This is particularly impressive as finding a compact inverter that can handle such devices efficiently is often challenging.The reliability of the BESTEK 150W Power Inverter is another aspect that deserves praise. It has consistently provided steady power without any issues of overheating or short-circuiting. This reliability is crucial, especially when you are on the road and need your devices to stay charged and operational.Additionally, the inverter comes with dual USB ports, which is a great feature, allowing me to charge multiple devices simultaneously. This is particularly useful during long trips, where keeping phones, tablets, and other USB-powered devices charged is essential.The build quality of the BESTEK inverter is commendable. It feels sturdy and well-constructed, suggesting that it will last for a long time, even with regular use in the varied environments of different vehicles.In conclusion, the BESTEK 150W Power Inverter is an excellent product that I highly recommend. Its combination of compact size, powerful performance, and reliability makes it a must-have for anyone who spends a lot of time in their vehicle and needs a dependable power source. Having one in each of my vehicles has been a decision that continually pays off in convenience and reliability.

Well built, compact, fits easily in a glove compartment or purse. Works as advertised. I used it to run a small cooler in the car.

Update: The company sent me another unit to try. It doesn’t seem to have the same issue as the previous one. But time will tell if this one stops working as well. Still a decent deal for the price though even with usb ports that only work in the summer.The USB ports stop working when the device is cold. It will constantly connect and disconnect until it warms up. The outlet works fine at all times. When you get back in the car after a stop it still works and if it is warm out it always works. But, when you start the car on a cold morning it takes 10-20 minutes to finally start charging on the USB ports.This wouldn’t be so bad if the USB ports weren’t the only reason I chose this model over another option.

small and functional.I would add cables and the possibility of connecting it directly to the terminals of a battery. It only works with the car's cigarette lighter, and perhaps with another connection we can give it more uses

It’s the best!!

I use this on a 15 watt 1000 lumen light I purchased from HF3eight and a jump pack with an 18 amp hour AGM battery. Using this inverter and my light it draws 18 watts. Can get me plenty of light when the power shuts off during a storm.And best of all, it is almost totally silent. I’ve had a similar inverter that I purchased at a local HF3eight, and that thing is super loud. This inverter is silent and only 1/2 of the price as the local one I purchased.Sure, it is modified, and using it on my box fan causes a buzz, but I only tested it with the box fan. I’m not going to subtract a star for that, as almost all modified sine wave inverters are going to cause a buzz in a tv or fan. My primary use is the 1000 lumen LED, and it works like a champ for that.

Works like a charm

I bought this for my SUV when I go camping. I have an electric cooler I use to plug it in and it works awesome! Great for USB purposes too!

Si funciona, no es ruidoso, es compacto y se siente de buena calidad, por su capacidad no es recomendable conectarle un microondas ni la lavadora, es para aparatos eléctricos pequeños y de preferencia para usarse con el motor del carro encendido sino la batería se va agotar muy rápido y tu carro no va a arrancar.

looks good and compact

Like design and functionality. However, font in instruction manual could be a bit larger for easy reading.