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300 Watt Power Inverter Reviews

What devices can be powered with a 300 watt power inverter?
 
Getting the right size for your device is important; get it wrong, and you could damage either the inverter or the appliance.

Power inverters are measured in watts, and a 300 watt power inverter is best for car applications and for small home devices, or devices in your car such as your phone.

Today we're going to take a look at some of the best available 300 watt power inverters currently available on the market today.

Summary of our Favorite 300 Watt Power Inverters:

Preview
Our Top Pick
Power Inverter 300W Car Inverter DC 12V to 110V AC Converter with LED Voltage Display & 4.8A Dual USB Car Adapter Charger by VOLTWORKS
BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter
Branded Option
Go Power! GP-SW300-12 300-Watt Pure Sine Wave Inverter
Product name
Power Inverter 300W Car Inverter DC 12V to 110V AC Converter with LED Voltage Display & 4.8A Dual USB Car Adapter Charger by VOLTWORKS
BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter
Go Power! GP-SW300-12 300-Watt Pure Sine Wave Inverter
Price
$29.99
$29.87
$193.14
Customer rating
-
-
-
Prime benefits
-
Our Top Pick
Preview
Power Inverter 300W Car Inverter DC 12V to 110V AC Converter with LED Voltage Display & 4.8A Dual USB Car Adapter Charger by VOLTWORKS
Product name
Power Inverter 300W Car Inverter DC 12V to 110V AC Converter with LED Voltage Display & 4.8A Dual USB Car Adapter Charger by VOLTWORKS
Price
$29.99
Customer rating
-
Prime benefits
More information
Preview
BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter
Product name
BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter
Price
$29.87
Customer rating
-
Prime benefits
More information
Branded Option
Preview
Go Power! GP-SW300-12 300-Watt Pure Sine Wave Inverter
Product name
Go Power! GP-SW300-12 300-Watt Pure Sine Wave Inverter
Price
$193.14
Customer rating
-
Prime benefits
-
More information

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

Where a 300 Watt Power Inverter can be used

Since batteries are the normal source of DC power, you’ll need a power inverter wherever you find batteries. The most common use is probably in the car; if you’re trying to find a way to use a wall plug in your vehicle, you’ll need a power inverter.

You might also need one if you use a battery-powered generator at home. Beyond the maximum wattage that can be used with the inverter, other important factors to consider include the outlets on the inverter. Most power inverters make use of standard outlets, perfect for small appliances and gadgets.

Some examples of devices that can be powered off a 300 Watt inverter include include Cell Phones, CD Players, VCRs, Satellite Dishes, Printers, Laptops, MP3 Players, a PS2/Xbox, and a 25” TV.

These devices have ratings from as low as 24 watts, to as high as 175. If you spend a lot of time in vehicles, or want to use lights in emergency situations, then these power inverters are best for you. If you run larger devices, you may need an inverter with a higher wattage rating.

Reviews of our favorite 300 Watt Power Inverters


BESTEK 300 Watt Power Inverter

This power inverter is designed for car use, with a car battery as its DC source. The device can power devices drawing up to 110 Volt AC power. BESTEK is known to be America’s top power inverter brand, and this device can also accommodate power surges of up to 700 watts.

This 300 watt Bestek is at a great price point given it's well known and trusted brand name.

This Power Inverter comes with 2 AC Power Outlets and 2 USB Ports for fast, multi-purpose charging. It is compact and extremely lightweight which makes it perfect for vacations and work trips where there is no stable power source. It comes with device protections versus overheating, overloading, overcharging, and other electrical issues.

BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter
  • BESTEK Advantage: America's leading power inverter brand. Provides 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports
  • Fast Charging: two 110V AC outlets for charging larger devices such as laptops and tablets, 2 USB charging ports (0-2.4A) for powering USB compatible devices, a good choice as requisite car accessories
  • Ultra Compact and Lightweight: iPhone-sized design ideal for use on vacations, work trips, and camping. 24 inch cigarette lighter plug makes the power inverter can be plugged into almost any vehicle
  • Multi-Protection: built-in 40 amps fuse to protect your device. Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting
  • Durable metal housing provides advanced protection from drops and bumps.Smart cooling fan system makes the car power inverter very silent when operating,and the fan runs faster when the device gets warmer or output power exceeds 70W.18-Months Warranty

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Lightweight
  • Quality brand
  • Surge protection

CONS

  • No LED screen to monitor status
  • No smart cooling fan

Quesvow Power Inverter

This one by Quesvow is, without a doubt, one of the sturdiest devices there are, and is equipped with 2 AC Power Outlets and 2 USB Drives, making it the perfect device for charging. It is also built for use in the car, as it comes with an adaptor for the cigarette lighter slot. It is protected with all the necessary safety mechanisms, and is compact and lightweight.

Within the price range you would expect for an inverter of 300 watt power.

The smart matching feature of the device allows you to charge gadgets like iPads and other devices with ease. It comes with a built-in fuse to protect against overheating, and has a long cord of 33 inches for added convenience. Even people in the backseat of the car can power their devices from this inverter. The device comes at a great price-point as well, offering a good warranty on an inexpensive product.

300W Car Power Inverter DC 12V to 110V AC Converter 4.8A Dual USB Charging Ports Car Charger Adapter
  • · 【Premium 300W Power Inverter】Provides 300 watts continuous DC to AC power and 600 watts of peak power. Great for charging string lights, laptop, breast pump, CPAP machine, nebulizer, game console, kindle, TV, DVD players, lights, iPad, and other electronic devices
  • · 【Fast Charging】This car inverter features dual 110V AC outlets and 2 USB ports. 4.8A/dual USB ports can automatically detect your devices to deliver optimal charging speed, great for your kindles, iPhones, iPads, tablets, MP3 players, cameras, and other mobile devices
  • · 【Mufti-Protection】Built-in fuse to protect your device, safe charging design provides protection against, overheating, under and over voltage charging, short circuiting, overloads, and overcharging
  • · 【MORE CONVENIENT 】- Plug directly into your cigarette lighter socket,The length of the Cord is 33 inch,to satisfy people using easily who sit in backseat,with fastening tape,which is more convenient to keep.
  • · 【Upgraded Cooling Effect】Built-in very silent automatic temperature-controlled cooling fan helps reduce heat and prevent shortages. Durable metal housing provides advanced protection from drops and bumps.

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Compact and lightweight
  • Long cord
  • 24-month warranty

CONS

  • No temperature display

VOLTWORKS 300 Watt Power Inverter

This 300 watt inverter from Voltworks performs well as a reasonably-priced, two-outlet power inverter. As standard, it comes with a 4.8A plug which can be readily inserted into the car adaptor, and is intended for 110 Volt AC devices.

This great little inverter is very affordable given it's design and built-in features.

The Voltworks 300 watt power inverter comes at a good price, and has all the standard features one would expect from a typical 300 watt inverter. It offers an LED load readout to tell you how much energy the inverter is drawing, and comes with the normal safety features against overheating. Max load is a continuous 300 watts, with a peak load of 600 watts. Overall, most users find that Voltworks inverters hold up well to repeated use.

Sale
Power Inverter 300W Car Inverter DC 12V to 110V AC Converter with LED Voltage Display & 4.8A Dual USB Car Adapter Charger by VOLTWORKS
  • 【300 WATT CAR POWER INVERTER】Provides 300watt Modified sine wave power, 600watt surge power inverter, convering DC 12 volt to AC 110~120 volt with 2 AC outlets and 2 USB Ports and patient customer after-service,18-Months Warranty.Product liability insurance is covered by AIG insurance company.
  • 【SUPER SILENT AND INTELLIGENT】The aluminum housing provides a better protection form drops and bumps.The smart cooling fan only works when temperature>104+/-41℉ or your loads exceed 100watt. And the sound of cooling fan is lower than 45dB, hardly to hear it.Protects the inverter from heating and exceeding output power.
  • 【COMPACT AND WIDELY APPLICATION】Travel-sized, comes with two 120v AC outlets, 2x2.4 amps USB ports, and 2ft cigarette lighter plug for your cars, vehicles when you are in vacation, road trip and camping.
  • 【ADVANCED PROTECTION】Designed with advanced isolated input and output tech. Fully protect your devices by its Over voltage, Low voltage, Overload, Short circuit, Over heat protections.
  • 【WHAT YOU WILL GET】A 300w power inverter, a user manual, a 18-month warranty, a friendly and patient customer after-service.

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Good price
  • LED display
  • 18-month warranty

CONS

  • Some reviews questioned the durability of the inverter.

Geloo 300 Watt Power Inverter

Another great device you can use especially for any adventures in your car is the Geloo 300 Watt Power Inverter. With two ac power outlets and two USB ports, you’ll find the inverter is more than adequate to handle multiple devices - though you will of course want to be careful not to exceed more than 300 Watt continuous load.

A lesser known brand, but still a good price point that you'd expect from this power range. 

The Geloo 300 Watt power inverter receives high marks for a good price and great durability. It lacks some features found on comparable products, such as an LED display, but makes up for that with consistently favourable reviews.

GELOO 300W Power Inverter, DC 12V to 110V AC Car Inverter with 4.8A Dual USB Charging Ports Car Charger Adapter
  • 【Premium 300W Power Inverter】Provides 300 watts continuous DC to AC power and 600 watts of instantaneous power. Great for charging string lights, laptop, breast pump, CPAP machine, nebulizer, game console, kindle, TV, DVD players, lights, iPad, and other electronic devices
  • 【Fast Charging】This car inverter features dual 110V AC outlets and 2 USB ports. 4.8A/dual USB ports can automatically detect your devices to deliver optimal charging speed, great for your kindles, iPhones, iPads, tablets, MP3 players, cameras, and other mobile devices
  • 【Mufti-Protection】Built-in fuse to protect your device, safe charging design provides protection against, overheating, under and over voltage charging, short circuiting, overloads, and overcharging
  • 【Ultra Compact】Just about iPhone size makes the car power inverter easy to storage. 31inches cigarette lighter plug fits into any car DC socket, satisfying the needs of people who sit in backseat
  • 【Upgraded Cooling Effect】Built-in very silent automatic temperature-controlled cooling fan helps reduce heat and prevent shortages. Durable metal housing provides advanced protection from drops and bumps.

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Good durability
  • Choice of colors - red or blue

CONS

  • Lacks a power use display

Poweradd 300 Watt Car Power Inverter

For those who love to travel and still love to make use of their gadgets, one of the best devices you can use is this one by Poweradd. It is compact and lightweight, yet is extremely powerful. It makes use of 12 Volt and is used for 110V AC power devices. The device works optimally for various gadgets that you usually take with you on long travels. It also has a solid and sturdy metal housing that protects it even on rough roads and against the constant vibration of a car.

A good price for a solid 300 watt power inverter.

High marks for durability and quiet operation. The brand is well-reviewed and customer service appears to be prompt and responsive.

PROS

  • Dual USB Ports
  • Compact Size
  • Cooling System
  • Protection Technology

CONS

  • No display

Foval 300 Watt Power Inverter

This 300 Watt Inverter by Foval comes with all the standard features and is great for powering up various small electronics through the battery of the car. It comes with two USB ports and 2 AC power outlets. Its compact design is fully safety certified.

Well known brand, typical price point, good deal we think!

Aside from the all-around safety of the device, the Foval power inverter also comes with a smart Cooling fan. The fan runs faster when the power inverter works harder, yet it remains silent throughout the operation. The inverter can be used in applications other than the car, such as emergencies, outdoors, vacations, and the like. In an unusual step for models at this price-point, the Foval inverter also comes with four replacement fuses for any situations in which you might accidentally overload the device.

Foval Power Inverter 300W DC 12V to 110V AC Converter with 4.8A Dual USB Car Charger
  • Premium 300w car power inverter with 2 USB ports and 2 AC outlets. Dual USB ports can charge most phones and tablets simultaneously (Max 4.8A total output), while two grounded AC outlets (300-350W) great for charging laptop, breast pump, nebulizer, game console, kindle, TV, DVD players, lights, iPad, and other electronic devices
  • Safe with FCC authentication built-in 40 amps fuse with full-protection : overheating, under and over voltage charging, short circuiting, overloads, and overcharging (Applied for a 12V car but not 24V)
  • Ultra compact and lightweight: iPhone-sized design for space-saving and easy storage, 30 inch cigarette lighter cable makes the power inverter can be placed on the backseat
  • Durable metal housing provides advanced protection from drops and bumps. Integrated smart cooling fan makes it silent when it running helps reduce heat and prevents shortages
  • What you get: Foval 300W car power inverter, 30 inch longer cigarette lighter cable, 4 replacement fuse, user manual, 18 months warranty and 100% Customer Service

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Long cord (30 inches)
  • 2 sockets and 2 USB cords
  • 18 month warranty

CONS

  • No LED display
  • Some complaints about a noisy fan

Go Power! GP-SW300-12

Unlike any of the other inverters on this list so far, this power inverter by Go Power is a pure sine wave inverter. SImply put, a pure sine wave inverter provides a steady, smooth stream of power comparable to the power from a supply company. Most inverters provide power in “blocks”: overall, it’s a steady flow of power - but if you broke it down, you’d notice it was actually a bit choppy. For most devices this doesn’t matter much. Nearly any device you’d charge in a car works fine with a modified sine wave inverter, like the previous entries on the list.

But if you’re looking for a power inverter that’s ideal for home use, then this is the one you should get. The pure sine wave ensures a smooth power supply for sensitive electronic devices, like TVs or refrigerators.

On the pricier end, but you're getting a pure sine power inverter that you can trust.

The price point for this inverter is higher than the others on the list so far, due to the pure sine wave output. But for that feature, the price is quite reasonable and the reviews are favorable. Even the yellow color is unusual and a nice change from the more typical black-and-red color schemes.

Go Power! GP-SW300-12 300-Watt Pure Sine Wave Inverter
  • 300 watt continuous pure sine wave inverter 12 volt input
  • 450 watt surge
  • 2 GFCI protected outlets to plug into
  • Over voltage, under voltage and overload protections
  • 2 year warranty for New unit (Refurbished units come with a 30 day warranty)

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Yellow!
  • Pure sine wave output
  • Home use

CONS

  • Max 450 watt surge protection
  • No LED display

Leadchuang 300 Watt Power Inverter

Another power inverter worth the purchase is this one by Leadchuang. It has an ampere rating of 8.4 A, and comes with four USB ports and one 110v AC power outlet, making it perfect for charging mobile devices.

Standard price-point for this power range. 

This entry from Leadchuang is one of the most inexpensive on our list. It achieves that honor partly by cutting the number of outlets offered from two, which is the standard for a 300 watt inverter, to one. To make up for the single outlet, it provides four USB ports, clearly designed with a mobile generation in mind.

Leadchuang 300 Watt Power Inverter 12V to 110V Converter for Car USB Charger Car Power Inverter Power Inverter 300 Watt for Car Cigarette Lighter
  • Heavy-Duty 300W Power Inverter: Provides 300 watts continuous DC to AC power. Great for charging your laptop, phone, tablets, electronic breast pump, DVD player, game machine, TV, air mattress, LED lights, camera batteries, kindle, and etc.
  • Multi-Protection: An automatic cooling fan is designed to control temperature and prevent overheat and shortage. Built-in fuses are used to protect your devices from overheating, under and over voltage charging, short circuiting, and overloads.
  • Fast Charging: 4 USB charging ports (0-2.4 A) and one 110V AC outlet can quickly charge your phones, kindle, laptop and other electronic devices.
  • Ultra Compact and Lightweight: This 300W power inverter is about the size of iPhones, creating convenience to place anywhere you want. A 18-inch universal design car cigarette lighter fits well in almost any types of cars.
  • Warranty and After-sale: A 12-month warranty is included in this inverter. Also, a friendly customer support team is always here to help you when you need.

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Small size
  • 4 USB ports

CONS

  • Only one outlet
  • Some complaints about component quality

AIMS Power PWRI30012S Pure Sine Power Inverter

If you are using voltage-sensitive devices that require a pure sine wave input, then this power inverter is perfect for you. It’s one of the most advanced out there, and you can be assured of fine and smooth operations with this 300 watt power inverter.

Very affordable pure sine wave option, from a well known brand. 

Another pure sine wave offering - at a far higher price than the normal car-adaptor type of inverters, this one from AIMS will give you a smooth supply of power for the most sensitive devices. Build quality receives good reviews, and the inverter still weighs under three pounds.

AIMS 300 Watt, 600 Watt Peak, Pure Sine DC to AC Power Inverter, USB Port, Cables Included - Non UL Listed
  • POWERFUL: 300W max continuous power, 600W surge, clean pure sine power, soft start technology, compact design, lightweight
  • PROTECTIONS: overload, over temp, high voltage, low voltage, short circuit, internally fused, low and high voltage alarm, cooling fan, and isolated ground neutral.
  • FEATURES: Works with small electronics, appliances and much more. Includes USB port, cables and LED indicators. Outputs up to 2.5 amps.
  • TRUST AIMS: Buy with confidence. In the inverter business for over 20 years. All tech support, warranty, and sales supported in Nevada .
  • APPLICATIONS: Ideal for powering cell phones, computers, CPAPs, small TVs. Use high quality copper cables in your system.

Last update on 2020-12-03 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Thermal fan
  • Good build quality
  • Pure sine wave output

CONS

  • No display
  • Connector ends protrude and can break