Product Features and Description
- Top-Ranked Brand: BESTEK power inverter is a leading brand in America known for its high-quality power inverters. It offers 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports.
- Quick Charging: The BESTEK power inverter comes with two 110V AC outlets perfect for charging larger devices like laptops and tablets, along with 2 USB charging ports (0-2.4A), making it an excellent choice as a necessary car accessory for universal travel adapter.
- Portable Design: The power inverter from BESTEK is designed to be ultra-compact and lightweight, similar in size to an iPhone, making it ideal for vacations, work trips, and camping. It includes a 24-inch cigarette lighter plug that allows it to be plugged into almost any vehicle.
- Comprehensive Protection: The BESTEK power inverter comes with a built-in 40 amps fuse for device protection. Its safe charging design offers protection against overheating, under and over-voltage charging, and short-circuiting.
- Durability and Silent Operation: The power inverter has a durable metal housing that provides superior protection from drops and bumps. Its smart cooling fan system ensures silent operation. The fan speed increases when the device heats up or when the output power exceeds 70W. It also comes with an 18-month warranty.

The BESTEK Power Inverter, recognized as America’s top power inverter brand, ensures a reliable transformation of 300 watts continuous DC to AC power and delivers a peak power of 700 watts. This premium product, specifically designed for DC 12V and Car use, is not compatible with DC 24V and airplane use. Boasting of 2 USB ports and 2 AC outlets, it provides an efficient solution for powering your devices on the go. However, it’s recommended to keep one USB port free when charging your iPad through the 2.1A USB port.
The power inverter’s exterior is made of high-quality Aluminium alloy, ensuring a solid and durable structure that can withstand severe environments. Its smart cooling fan system ensures silent operation, with the fan speed increasing when the device gets warmer or when the output power exceeds 70W. This design provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging. It also includes two smart USB charging ports that can intelligently detect your devices and deliver the best-matched charging current for fast charging speed. Each port offers auto 0-2.4A, with a total output of 4.8A.
The BESTEK Power Inverter also functions as a universal travel adapter, making it a perfect companion for long trips. The 24-inch cigarette lighter plug allows the power inverter to be plugged into almost any vehicle, transforming it into a universal power inverter for car adapter. With a lighter socket that can withstand up to 5000 insertions and extractions, it ensures a stable and secure connection. Built-in USB charging ports and a plug-in buckle design provide a stable current for high-speed charging. Its unique ability to power LED lights makes it ideal for creating festive atmospheres during Christmas and other celebrations.

- Product Dimensions: 4.8 x 3.1 x 1.9 inches
- Item Weight: 10.1 ounces
- ASIN: B004MDXS0U
- Item model number: MRI3011BU
- Best Sellers Rank: #514 in Automotive (See Top 100 in Automotive) #6 in Power Inverters
- Is Discontinued By Manufacturer: No
- Date First Available: February 5, 2011
- Manufacturer: BESTEK
- Country of Origin:
- Brand:
- Model:
- Manufacturer Part Number:
- Voltage: 12 to 110 volts
- Wattage: 300w
- Package Dimensions:

Navigating the Trade-offs: The Upsides and Downsides of the Product
Several customers have expressed satisfaction with the product, citing its usefulness for a range of applications. A customer, Nkarna, mentioned how the product served as an excellent inflator for an air mattress during a camping trip, scoring it a 5-star rating. Similarly, Tina Garbarino claimed it to be the best power inverter she had used after going through three others. She also pointed out that it’s a product you can’t cheap out on, indicating its quality.
The compact size and charging capabilities of the product also seem to have won over many users. Richard Kearney commended the product for its efficiency, allowing him to use Bluetooth in his 2003 Tacoma. Another user, Michael, applauded the product’s portability, stating that it worked well with his small laptop in his car. Users also appreciated the inverter’s low noise level while in use.
Furthermore, the product’s long-term performance and durability have also been highly praised. As noted by user T. Estrick, the product has remained sturdy, durable, and reliable even after several years of use. For Krystal, it has become a constant companion during car trips and camping, used frequently to charge a computer and phone.
Despite the numerous positive reviews, the product has also received its share of criticism. Several customers expressed disappointment over the product’s reliability and functionality. For instance, user Mumbles complained about the product going into fault mode without anything plugged in. Nursing101 shared a similar experience, stating that the product did not work the first time it was used right out of the box.
Other users have had issues with the product’s longevity and its impact on other devices. Derek Ramp, for instance, lamented how the product burned through three fuses in his truck after just two uses. Another customer, Just me, was upset that the product broke the auxiliary power outlet in their new car after one use.
Lastly, some customers questioned the product’s power capabilities. Charles Stark noted that the product doesn’t do anything a cigarette adapter wouldn’t do and that it doesn’t power much. Mike also reported that the inverters do not work properly, turning on and off every second, making it impossible to charge. He further criticized the company’s customer service for not responding to messages for help or warranty.
What do the stars speak of?
Opinions about this product were divided in such a proportion among the buyers.
I was really worried because I have an air mattress that has a built in pump, i didn’t know if that was going to be an issue. But damn! This thing really pulled through and did an amazing job. Totally need this if you’re inflating beds/floats on a camping trip. Totally awesome.
Goes in fault mode without anything plugged in! 🤬

Queries & Clarifications: All You Need to Know
1. How does the BESTEK 300W power inverter for car work?
The BESTEK 300W power inverter works by converting DC 12V power from your car’s battery into AC 110V power. This allows you to power or charge devices such as laptops, phones, tablets, and other electronic devices in your car. The inverter plugs into your car’s cigarette lighter socket and has 2 USB ports and 2 AC outlets for connecting your devices.
2. Is the BESTEK 300W power inverter a universal adapter?
Yes, the BESTEK 300W power inverter can be considered a universal adapter as it can be used to power or charge a wide range of electronic devices. However, it’s essential to note that the inverter is designed for use with DC 12V and cars only. It’s not suitable for DC 24V and airplane use.
3. Can the BESTEK 300W power inverter handle high power electric devices?
No, it’s not recommended to use the BESTEK 300W power inverter to power high power electric devices such as hair dryers and electric heaters. These might draw too much power and blow a fuse in the inverter.
4. Is the BESTEK 300W power inverter safe to use?
Yes, the BESTEK 300W power inverter is safe to use. It features a safe charging design that provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging. Its aluminium alloy shell also protects the internal components from severe environments.
5. Does the BESTEK 300W power inverter get hot during operation?
It’s normal for the inverter to become warm to the touch while you are using it. The inverter has a smart cooling fan system that operates silently and runs faster when the device gets warmer or when the output power exceeds 70W to keep it cool.
6. How many devices can the BESTEK 300W power inverter charge at the same time?
The BESTEK 300W power inverter has 2 USB ports and 2 AC outlets, so you can charge or power up to four devices at the same time. However, it’s important to ensure that the total power consumption of the devices does not exceed the inverter’s capacity.
7. Can the BESTEK 300W power inverter be used for long road trips?
Yes, the BESTEK 300W power inverter is an ideal choice for long road trips. It can keep your devices powered or charged during your trip, and its durable design allows it to withstand the rigours of travel.
8. How long is the cable that connects the BESTEK 300W power inverter to the car’s cigarette lighter socket?
The cable that connects the BESTEK 300W power inverter to the car’s cigarette lighter socket is 24 inches long. This gives you some flexibility in where you place the inverter in your car.


Ana Victoria –
Funciona perfecto, muy útil para emergencias
Este inversor de corriente para carro es excelente. Convierte la energía de manera eficiente y permite cargar varios dispositivos sin problemas. Es compacto, fácil de usar y perfecto para viajes o emergencias. Además, tiene buena potencia y no se calienta demasiado. ¡Definitivamente una gran compra
Reggie –
Works great
This worked great to blow up an inflatable air mattress for a camping festival. Also used it to charge a usb chargeable lantern.
Buyer in PA –
YES it does power my laptop no problem
was skeptical that it would not power my laptop since its not a pure sine inverter – but YES it does power my laptop no problem – I like it – small package that puts out a lot of power and very quiet!
Pool Man –
Nice unit
Quality seems good it’s smaller in size then I thought it be but it seems to work great. I’ll update at a later time as to its longevity.
SJL –
Fry, baby fry!
The AC outlets work properly. The first time I used the USB port, it immediately fried my phone charging port. The documentation states the output is at 4.2 AMPs yet the device states 2.4 AMPs. Flip a coin,or just don’t use the USB ports.
Amy –
Terrible
Quite literally stopped working on the very first attempt to use AND blew my mini soda fridge. Minus one star
Edwin ortiz maya –
Funciona muy bien
Excelente producto
Maria Duran –
Loud pop and Fire came out
First time turning it on and a loud pop came out of it followed by a small fire inside then smoke. Device did not turn on at all I requested a replacement.
Adolfo Alexander Benavides Álvarez –
Conversor
Excelente producto
Allison Crain –
Good, but plug broke
Works great, but would like plugs to be spaced better so you can plug in two USB converters at once. Would like USB c plugs since that it what everything is going towards. The plastic on the plug broke so I threw it away. Not sure if it is the quality or if any plug would have been broken from my kids repeatedly kicking and hitting it with things.
Dominic Pallini –
Works
Works well, powers my RV tv
Anthony Hirsh –
It works great
It has two 12 volt ports it has 2 USB ports and a led light to indicate when the unit is on
Joseph –
Didn’t work with ’18 Camry or ’21 Highlander
Purchased to use in our family vehicles, a 2018 Toyota Camry and 2021 Toyota Highlander. Both vehicles are stock, nothing added to draw on the power of the cigarette lighter-type plugs. However neither vehicle was able to power this AC inverter for more than 1 or 2 seconds. Lighter would turn on and power up, then abruptly fail.
Amazon Customer –
Works as it should
Packaged well, arrived on time. Works as it should should. Compact size.
JH –
Can blow a fuse
I used it in a 2018 truck and I fried the fuse others it’s a good item with fast charging and a long cord.
George Scherer –
Use it to power any laptop or tablet in your car
I was looking to buy a 12v to 18.5v power adapter for my HP laptop so I could use it in the car, but this was cheaper and I can just plug any laptop power cord into it. Very solid construction, a bargain!
Lisa –
Power Invertor
The price wasn’t bad. It functions well. It is simple to use.
Amazon Customer –
Funciona
Es un aparato que era muy pequeño para los watts qué yo quería utilizar pero para el carro es muy funcional este de acuerdo con la cantidad de watts qué necesiten.
Never showed up said undeliverable –
Doesn’t work on arrival
Shuts off and blinks
Drake M. Davis –
5/5
Great
Al Hatch –
Don’t buy
Every time you plug in something it blows the fuse in your car for your cigarette lighter that you use to power this thing. Cheap junk. Just by regular power pack instead
BLarson –
Works great
Excellent product. Good design
Luis Soto –
Broke on first use
It seemed like a good quality product with sturdy metal case, but the second i tired to use it, shut off and never came back on
J. Fiumenero –
Works for laptop in the car
This is just what I needed to work on my lap top while my husband is driving, on long trips!
Jarrett –
Great
Lasted me years