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400 Watt Power Inverter Reviews

In this article we will explain exactly what a 400w power inverter is capable of, what its limitations are as well as recommending the very best 400w power inverters for all occasions.

If you ever traveled on a long road trip with your family, you must be aware of how difficult children can be when they are confined to a place. A way to remedy this is to give them a tablet or laptop but the main problem with doing that would be the battery. This is because tablets and laptops can’t run for too long on a single charge.

At this point, a power inverter can be of immense help to charge up your kid’s electronic appliances. The above example is just one of the ways a power inverter can be useful, there are also some other situations where they can be handy such as when you are camping or hiking or on a vacation trip.

Summary of our Favorite 400 Watt Power Inverters:

Preview
Our Top Pick
BESTEK 400W Car Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports
Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
Branded Option
Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter
Duracell DRINV400 High Power Tailgate Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.4 Amp USB (5V)
Product name
BESTEK 400W Car Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports
Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter
Duracell DRINV400 High Power Tailgate Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.4 Amp USB (5V)
Price
$39.99
$59.23
$38.99
$53.99
Customer rating
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-
-
-
Prime benefits
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Our Top Pick
Preview
BESTEK 400W Car Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports
Product name
BESTEK 400W Car Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports
Price
$39.99
Customer rating
-
Prime benefits
More information
Preview
Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
Product name
Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
Price
$59.23
Customer rating
-
Prime benefits
More information
Branded Option
Preview
Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter
Product name
Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter
Price
$38.99
Customer rating
-
Prime benefits
More information
Preview
Duracell DRINV400 High Power Tailgate Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.4 Amp USB (5V)
Product name
Duracell DRINV400 High Power Tailgate Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.4 Amp USB (5V)
Price
$53.99
Customer rating
-
Prime benefits
-
More information

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

What can a 400 watt inverter run?

A 400W power inverter can offer a number of advantages when you own one. They can power a small refrigerator, laptops, tablets, smartphones, digital cameras, power tools, small TVs, and DVD players.

How many DC amps does a 400 watt inverter draw?

The power required for an inverter to run is about 8 to 10 percent than the power load of the appliances being run. This is due largely to the efficiency of the inverters. The easiest way to work out how much DC amps 400 watts inverter will draw is as follow:

Watt(Power) = Volts (Voltage) X Amperes (Current)

Current drawn by a 400W inverter (400/110) A = 3.64 amps

How long can a car battery run a 400 watt inverter?

The best way to know how long a car battery will run when using an inverter pulling 400 watts of power is to know the amps hours of the battery you intend to use. For example, a 90-hour amp rating battery should be able to run a 400 watt continuous load for about two hours. The higher the amp hour rating, the longer the battery will last.

It is important to note that a car battery is designed to provide a large amount of current that a car battery is designed to provide a large amount of current over a short period of time and it is typically never drained more than 20% of its total capacity. This means it is not designed to be totally discharged but will wear out very fast.

For your convenience, it is recommended you get a deep cycle battery to provide power as they are designed to provide a steady amount of power for a long period of time.

Is a 400 watt power inverter appropriate to use with a laptop?

The amount of power consumed by a laptop depends largely on the screen size, typically they consume as low as 40 watts and up to 100 watts when they are off the battery.

When a laptop is charging, the power consumption of the laptop battery usually increases from 20 to 30 percent. For a 15-inch laptop, an average of 70 watts is consumed when it is plugged in, so a 400 watts power inverter is a good choice to use with a laptop.

Reviews of our Favorite 400 Watt Power Inverters

BESTEK 400W Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports

The BESTEK 400W power inverter is an excellent choice for those people who are looking for continuous DC to AC power and a peak power of up to 1000 watts. This model has 2 110V outlets and 4 USB ports that can power some household electronics such as a laptop, a small refrigerator, or a TV set. This model has a fuse that allows for safe charging thus eliminating the chance of overheating.

For an inverter of this power this is an average kind of price that you would expect to pay.

The BESTEK 400W power inverter works well with most with most devices and it is perfect for solving power shortage issues. 

If you are looking for a portable power inverter that has the capacity to support multiple loads simultaneously without overheating then you should go for this device.

Sale
BESTEK 400W Car Power Inverter DC 12V to AC 110V Car Adapter with 5A 4 USB Charging Ports
  • BESTEK Advantage? America's #1 power inverter brand. Provides 400W continuous DC to AC power and 1000 watts of peak power
  • Dual 110V household electrical outlets provide enough power for your laptop, digital camera, TV, fan, refrigerator, game console, DVD/Blu-Ray player, GPS, lamps, and more
  • 5A/ 4-Port USB charging ports make this power inverter ideal for charging your phones, tablets, and other USB-powered devices
  • Built-in replaceable 30A/32V*2 fuses and cooling fan for safety and easier maintenance. This power inverter has over voltage, overload, over-current, under-voltage, overheating, short circuit protection
  • Comes with 2. 3ft car cigarette lighter plug and 2ft black/red battery clips to plug into your cigarette lighter or connect directly to your vehicles battery

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Easy to maintain
  • Ensure safety with replaceable fuses
  • 4 USB ports for easy charging of your devices

CONS

  • Some reports that the fan is noisy

Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB)

This inverter provides 400W of portable power which is ideal for charging multiple devices such as laptops, game consoles, DVD players, portable TVs, and smartphones. It can also be used to power low-power lights, mobile office equipment, power tools, and camping accessories. The 2 USB ports in the device can give 800 watts of peak power which can enable you to charge your electrical devices.

Mid-price point for an inverter of this power range.

The Tripp Lite 400W power inverter has excellent safety features and it provides safe charging that provides utmost protection against overheating, overcharging, and overloads.

Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
  • CONVERT 12V DC POWER TO 120V AC POWER: 400W Inverter w/ 2 AC outlets and 2 USB ports provide 800 Watt of peak power, great for charging laptop, tablet, pump, TV, DVD player, lights, and more in your car, truck, boat or RV
  • VERSITILE, FAST CHARGING: The PV400USB features two AC outlets, a 2.1A USB port and a 1.0A USB port. Perfect for smartphones, laptops, tablets, GPS units, game systems, and other electronics
  • EASY TO USE: DC jack plugs into the cigarette lighter socket in your car, truck, boat or RV; or Battery Cables connect directly to the battery (always connect red to red and black to black)
  • PREMIUM SAFTEY FEATURES: built-in 40 amp fuse to protect your device. Safe charging design provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging
  • HIGH QUALITY WITH 1-YEAR WARRANTY: Durable housing provides advanced protection from drops and bumps. Integrated cooling fan helps reduce heat and prevents shortages. 1-year Warranty, Free Chicago-Based Technical Support

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Great safety ratings
  • Very portable
  • Durable design

CONS

  • Some reports of quicker than expected battery draining

Duracell DRINV400 High Power Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.1 Amp USB (5V)

The Duracell 400W power inverter has a dual AC outlet that helps to power your electrical devices. This inverter comes with an on/off switch control that enables easy control of the power going to the USB ports and AC outlets thereby helping to save on power consumption in the long run.

A very affordable option for this quality and power range.

When it comes to portability, the Duracell 400W power inverter is the best in its range, thus making it ideal for anyone who wants to pack light. The Duracell power inverter is fairly priced, so when you purchase this device you have portability combined with a fair pricing.

Duracell DRINV400 High Power Tailgate Inverter 400 Watt Peak 320W Continuous, 12v DC Input Includes 2 AC Outlets (115V) Plus 2.4 Amp USB (5V)
  • The inverter converts vehicle power into household AC and USB power, supplying up to 400 Watts of peak power, and 320 Watts of continuous output.
  • Features dual 3 Prong AC Outlets and 2 2.4amp USB Ports, all with protective covers, allowing you to charge and operate up to 5 devices at once.
  • Powerful enough to operate TVs, video games, laptops, small handheld tools and a wide range of 115V AC electronic devices.
  • For applications up to 175 Watts, the inverter plugs directly into your car's DC power port; for higher-demand applications, the battery clamps draw directly from your car's battery.
  • Ideal for tailgating, camping, and mobile work sites, the Duracell 400 Watt Tailgate Inverter supplies plenty of household power for your everyday needs.

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • It can charge up to 3 devices simultaneously
  • It helps to save on power consumed with on/off switch
  • Powerful cooling system

CONS

  • Not resistant to high heat

COBRA CPI490 400W Compact Power Inverter

This unit features 5 levels of protection against failures such as thermal shutdown, over-voltage shutdown, reverse polarity protection, low voltage alarm, and low voltage shutdown. It has 2 AC outlets and 2 USB port that can power up to two household appliances simultaneously.

The price is at par with similar products in the same range.

This inverter is a versatile solution for powering a laptop or other electrical devices whether you are in the vehicle or outdoor camping.

Sale
Cobra CPI490 Portable Power Inverter - 400 Watt Car Charger, 2 Grounded AC Outlets, 12 Volt 2.4 Amp USB Port, Survival Gear, Camping Accessories, Travel Essentials
  • POWERFUL - Plug in and charge your smartphone, tablet, and many other mobile devices from the convenient USB port. 400 Watts continuous (800 watts peak power) and a 12V power supply 2.4 Amp USB output gives you a charge on the go.
  • VERSATILE - The CPI490 gives you a power supply through two grounded AC outlets for office equipment and household appliances that draw up to 400 watts from your car, truck, RV or boat.
  • TWO POWER SOURCES - Connect directly to your vehicles battery or through your cigarette lighter for optimal use. Cigarette lighter cable and direct-to-battery cables are included.
  • ON-THE-GO - This power inverter has your back during tailgates, camping and road trips, and anywhere else your travels take you.
  • PROTECTION - With Cobras Pentagon Protection, you have 5 levels of protection from failures (thermal shutdown, reverse polarity, over voltage shutdown, low voltage shutdown, and low voltage alarm).

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • 2 grounded AC outlets
  • Pentagon protection
  • Separate USB jack

CONS

  • Quite bulky

VOLTCUBE 400W Power Inverter, 12V DC to 110V AC Car Adapter with Twin 2.4A USB Ports and Two Independent AC Outlets

VOLTCUBE 400W power inverter is a multi-purpose charging device with 2 USB ports and 2 AC outlets that can be used to charge pretty much anything. What makes this inverter unique is the fashionable honeycomb aluminum design. It also has the ability to protect your devices from overcharging, short circuits, overloads and under voltage. It also comes with an integrated safety module that protects it from overheating.

A great price for a inverter of this power range.

This is a very powerful and fast inverter with 400W of rated power and 800W of peak power. This inverter can be used anywhere whenever you require AC power, it is easy to connect and reliable. Now, you need not worry if outages occur because you have a trusted emergency power source.

VOLTCUBE 400W Power Inverter 12V DC to 110V AC Converter with 4.8A Dual USB Car Adapter with 2 Independent AC outlets (Blue)
  • 【POWERFUL INVERTER】:This power inverter provides 400 watts of continuous DC to AC power and 800W peak power to two independent AC outlets for multi-purpose charging (plugs are now further apart to accommodate larger plugs). AC outlets are useful for charging your laptop and digital camera, or powering your TV, refrigerator, air mattress etc.
  • 【DUAL USB PORTS】: 2 USB ports (2.4A each, max. 4.8A) for powering USB compatible devices, such as smartphones and tablets.
  • 【DURABLE AND STYLISH DESIGN】: Fashionable aluminum honeycomb structure is durable and looks great too. What’s more, it provides great heat dissipation.
  • 【SAFE FOR APPLIANCES AND BATTERIES】: 2x30 amps (60 amp max) built-in replaceable fuses protect your device and low noise cooling fan prevent overheating, under- and over-voltage charging, overloads, overcharging and short circuiting.
  • 【A WORTHWHILE PURCHASE】: The Voltcube 400W car inverter comes with high-quality and gold plated metallic alligator clips, user manual, cigarette lighter and 2 replaceable fuses. A 12-month warranty, friendly customer service and lifetime technical support are available anytime.

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Great price
  • Easy to connect
  • Smart USB port

CONS

  • Must unplug when not in use
  • Bulky design

Power Bright PW400-12 Power Inverter 400 Watt 12 Volt DC to 110 Volt AC

This power inverter does a lot more than you expect from an inverter of its size. With its 400 watts capacity, it can power tablets, refrigerators, tablets, laptops, phones, and other electronic devices. The 2 110V AC adapters and 2 USB ports allow you to power up to 4 devices at the same time. This device comes with an inbuilt protection against low voltages, overloads, and short circuits. It also features an inbuilt cooling mechanism that helps to prevent your devices from overheating.

Great price for an inverter of this quality.

If you are looking for a power inverter that is portable, this inverter is convenient to carry as it is light in weight and compact. The PowerBright 400W power inverter is the ideal inverter if you are looking to pack light for a vacation trip or camping.

Power Bright PW400-12 Power Inverter 400 Watt 12 Volt DC To 110 Volt AC, Model: PW400-12, Electronics & Accessories Store
  • 400 watts continuous power
  • 800 watts peak power
  • Anodized aluminum case provides durability
  • Built-in Cooling Fan
  • Cigarette lighter plug

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Dual USB ports and AC outlets that can connect with anything
  • Has a silent integrated cooling fan
  • Very lightweight

CONS

  • Comes with a limited warranty of 12 months

Wagan EL2610 Gray 400W Pro Pure Sine Wave Power Inverter

The Wagan 400W power inverter is a quality and popular product with 800 watts of peak surge power. It features two AC outlets and 5 USB ports to power your appliances. It is compatible with appliances such as digital cameras, power tools, laptops, smartphones, TV sets, etc. It also comes with safety features that ensure overheat protection, auto reset, and short circuit protection.

Its on the higher end for a power inverter of this range.

The Wagan 400W power inverter is built to provide enough power to keep most of your devices whether you are outdoor or indoor. This inverter is among the best durable inverters you will find on the market.

Wagan EL2610 Gray 400W Pro Pure Sine Wave Power Inverter
  • Perfect for recharging devices on the go and for people with mobile lifestyles
  • Plug the inverter into the 12V DC socket (up to 150W) or attach directly to the vehicle battery with the alligator clamps (included)
  • Provides 400W continuous power and 800W peak surge power
  • Safety features such as overload, overheat and low battery protection
  • Designed to be efficient, the pure sine technology allows appliances to recharge faster, save energy costs and extend the life of appliances

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Easy to maintain
  • Short circuit protection
  • Can be used for various functions

CONS

  • It might be expensive for some users

Bravo View INV-400U 400-Watt INV-400U-400-Watt Power Inverter USB Charging

The BravoView 400 watts power inverter is very portable due to its lightweight size. This inverter is incorporated with a dual 2.1A USB port that is capable of charging smartphones, tablets, and other USB-powered devices.

Sits in the higher price bracket for this power range.

It has excellent safety features designed to provide optimum protection against thermal shutdown, low voltage shutdown, over voltage, and reverse polarity.

Bravo View 200W Continuous 400W Peak Power Inverter, DC 12V to 110V AC Car Inverter with 2 AC Outlets and 1 USB Charging Port (INV-400U)
  • 200 Watts continuous power, 400 Watts peak power
  • Dual AC Outlets: converts DC battery power to AC household power
  • 2.1A USB port – Charge smartphones, tablets plus many other USB-powered devices
  • Includes Cigarette Lighter Cable (3 feet) - Provides power directly from vehicle 12V power socket
  • Total Protection – thermal shutdown, reverse polarity protection, over-voltage shutdown, low voltage shutdown and low voltage alarm, replaceable 20A fuse

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Compact – can fit anywhere and it is easy to carry around
  • Resistant to overheating
  • Resistant to physical damage

CONS

  • The cooling fan is quite loud

Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter

This inverter also comes with dual USB ports that make charging of two devices at the same time possible. The design of the Ampeak 400 watts power inverter is ultra-compact so it helps to save space. This inverter features a built-in fuse that helps to protect the devices against power surges so you do not have to worry about the safety of your device whilst using it.

Ampeak power inverter is the best choice for anyone who desires to have extra power to support their extra household appliances. The Ampeak 400 watts power inverter is a whole package because it gives you a solution to an extra power and a dual AC port so that you can charge multiple devices at the same time.

This power inverter is also included in the best power inverter for semi truck.

Sale
Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter
  • 【A Real Powerful and Practical Inverter】Provides 400W continuous DC to AC power output, 800W surge capacity, features with 110V AC socket and 3.1A Dual USB port, ideal for AC household appliances or on trips, camping or work sites
  • 【Widely Appliction】Battery Clip Cables and Cigarette Lighter Plug Cable for different power source connection demands. Dual 3.1A USB Charging Ports great for iPod, Smartphone and so on, Dual 110V AC Outlets ideal for laptop, game console, kindle, TV, etc
  • 【Ultra Compact and Lightweight】iPhone-sized design for space-saving, easy to store and carry. Ideal for use on the long car trip, family vacation, and camping. Nearly 26 inch cigarette lighter plug makes the power inverter suitable for almost any vehicle
  • 【All-Round Protection】Built-in Replaceable 35A mini slip Fuse*2 & Cooling Fan & ABS Shell, automatic shutdown protection against Over voltage / Low voltage / Overload / Short circuit / Over heat. Advanced protection of Low Voltage Alarm
  • 【What You Get】All our inverter have ETL certification. We provide 18-Month Hassle-Free Warranty, 24-hour friendly customer service and 100% customer satisfaction

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Dual USB ports that support fact and safe charging
  • Lightweight for easy portability
  • Fuse to protect against power surges
  • Compact design

CONS

  • Expensive

Whistler Pro-400W 400 Watt Power Inverter

The Whistler Pro 400W power inverter provides 400 watts of continuous power and a peak power surge capacity of 800 watts. It features 2 AC outlets and 1 USB port for a fast and multi-purpose charge. It also has a multi-protection safe charging design that protects against overheating, short circuits, overloads, and over/under charging.

This compact sized inverter is ideal for use when on work trips, vacations, and camping.

Tripp Lite 400W Car Power Inverter with 2 Outlets & 2 USB Charging Ports, Auto Inverter, Ultra Compact (PV400USB),Gray
  • CONVERT 12V DC POWER TO 120V AC POWER: 400W Inverter w/ 2 AC outlets and 2 USB ports provide 800 Watt of peak power, great for charging laptop, tablet, pump, TV, DVD player, lights, and more in your car, truck, boat or RV
  • VERSITILE, FAST CHARGING: The PV400USB features two AC outlets, a 2.1A USB port and a 1.0A USB port. Perfect for smartphones, laptops, tablets, GPS units, game systems, and other electronics
  • EASY TO USE: DC jack plugs into the cigarette lighter socket in your car, truck, boat or RV; or Battery Cables connect directly to the battery (always connect red to red and black to black)
  • PREMIUM SAFTEY FEATURES: built-in 40 amp fuse to protect your device. Safe charging design provides protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging
  • HIGH QUALITY WITH 1-YEAR WARRANTY: Durable housing provides advanced protection from drops and bumps. Integrated cooling fan helps reduce heat and prevents shortages. 1-year Warranty, Free Chicago-Based Technical Support

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API

PROS

  • Safe to use
  • Energy efficient charging
  • Durable

CONS

  • Has only one USB port