10 Best 400w Power Inverters For of 2025

Tested and Reviewed: Top 10 400w Power Inverters For deals with expert ratings from 8.1 to a perfect 10

September 2025 Edition

Editor's Choice

9.7

BESTEK

BESTEK 400W Pure Sine Wave Power Inverter - DC 12V to 110V AC Converter, Fast Car Charger Adapter with 30W USB-C/18W Quick Charge/Dual 110V AC Outlet, Car Plug Adapter Outlet for Laptop

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Editor's bottom line:

“This 400w power inverters for is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Powerful DC to AC Inverter: Converts 12V DC from your car into 110V AC, providing 400W of continuous DC to AC power and 800W peak surge during load start-up. The advanced pure sine wave technology provides high quality AC power equivalent to grid power, which will protect and prolong the life of your electronics and appliances, such as CPAP machines, nebulizers, air pumps, breast pumps and more.
PD30W & QC18W Fast Charging: 400W car charger adapter quick charge supports PD30W (USB-C port) and QC18W (USB-A port) high output. The PD 30W port provides fast charging for iphone series phones. The 18W Quick Charge 3.0 port can charge most Android devices from 0% to 80% in 30 minutes.
Keep Your Devices Safety Charging: BESTEK 400Watt car power inverter has provided the advanced intelligent circuity safety system to prevent short-circuit, overvoltage, overload, overcurrent, low-voltage and overheating. Equipped with 2 Smart USB charging ports, which detects your devices automatically to deliver its fastest charge speed up.
Smart Temperature-controlled Silent Fan: The cooling fan will automatically rotate at different speed according to power load and temperature, this design can help to reduce the fan noise. Also the high speed cooling fan protect the inverter against overheating. Superior to modified sine wave inverter, greater drive capability, better protection to sensitive equipment, less audible and electrical noise, less power consumption.
Power Your Outdoor Life: This 400W pure sine wave has 2 AC outlets with PD30W USB-C and QC18W USB-A charging ports and can power up to 4 devices simultaneously. The 400watt power inverter supports most drones, cell phones, iPads, laptops, cameras and other digital devices on the go, as well as power other small appliances/devices such as CPAP medical devices, nebulizers, breast pumps, projectors, TV, speaker, air conditioner, microwave, mini-refrigerator, air pumps, car vacuum cleaners (rated power less than 400W). Great for power outages, emergencies, vacations, cars, RVs, travel trailer, tailgate party, trucks, SUV, Van, or anywhere AC power is needed.
Compatible with TeslaThe input voltage of the inverter is 11-17V, perfectly suitable for the 16V cigarette lighter socket of Tesla vehicles.
30-Day Hassle-free Return and 18-Month Replacement: To ensure customers have a good shopping experience, we offer a 30-day no-questions-asked return policy and an 18-month gurantee. The BESTEK 400w inverter is the perfect solution for road trips, camping and everyday travel, ensuring you stay connected and powered wherever you go on the road.

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Picked by 311 people today

9.5

Save 17%

Ampeak

Ampeak 400W Power Inverter 4.8A Dual USB Ports 2 AC Outlets Car Inverter DC 12V to AC 110V 11 Protections for Devices

17% OffFree Shipping

Main Highlights

Introducing our upgraded Ampeak 400W power inverter, designed with your convenience and safety in mind. Enjoy continuous power for your electronics and appliances on the go with 400W of power
With two fast-charging 2.4A USB ports and two AC outlets (110V), you can charge multiple devices simultaneously, ensuring you always have enough power on the go
Advanced Safety Features: 11 safety features to protect your devices and inverter from overload and overcurrent
Optimal cooling technology: Two smart, quiet cooling fans start automatically if the load exceeds 280W or the temperature exceeds 122, ensuring efficient temperature control and optimal performanceore and carry. Ideal for use on long car trips, family vacations, and camping. A nearly 26-inch cigarette lighter plug makes the power inverter suitable for almost any vehicle.
[30 days no reason to return and 18 months customer service]: If there is any problem in the process of using, you can ask us for help and give you a satisfactory solution within 24 hours!
Ultra-Quiet Fan Upgrade: Experience a peaceful user environment with our upgraded silent fan. It efficiently dissipates heat without producing distracting noises, ensuring your 400 watt inverter stays cool and functions flawlessly, even under heavy loads and high temperatures.
Smart Fan Activation: We've optimized the fan activation conditions to minimize noise and energy consumption. The fan now only kicks in when the internal temperature reaches 50°C or upon power cancellation, maximizing performance and preserving a quiet operation for your 12V inverter.

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9.5

Cummins

Cummins CMN400 400 Watt Car Inverter DC 12 Volts to 110 Volts AC Converter (Full Kit Included) 2 AC Ports Plus 2.4A USB & Fast-Charge 3.0A USB-C

Free Shipping

Main Highlights

Powers AC devices up to 400 watts for the convenience of home appliances while on the road
This power inverter is backlit so it can be turned on and off through a switch and easily seen in low visibility
Two AC 110V cigarette lighter socket ports to power devices simultaneously
Dual ports-standard 2.4A USB and fast charge 3.0A USB-C(R) to charge and power tablets and other devices
Peace of mind - short circuit and temperature or overload protection
Full cable kit included
Cummins official licensed product
Color- Black

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9.2

Pro Chaser

Pro Chaser 400W Car Power Inverter 12V DC to 110V AC Car Truck RV Inverter 6.2A Dual USB Charging Ports for Road Trips (Type C Adaptors Included) (Red)

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Main Highlights

Pro Chaser Power Inverter Basics: Your essential power source on the go, offering 400 Watts continuous and 800 Watts peak DC to AC power. It features dual 110V AC outlets and two USB ports (6.2A total) for broad compatibility.
USB to USB Type C Adaptors Included: USB to USB Type C Adaptors are included, enhancing flexibility by converting USB ports to Type C, making power accessible for a wide array of devices through USB, USB Type C, and standard US sockets.
Ideal for Road Trips: Ideal for travel, this inverter connects to a Cigarette Lighter Socket Charger, powering devices like smartphones, tablets, laptops, and small appliances directly from your vehicle. And the power sockets can be used to supply power to any appliances requiring 300W to 400W power such as laptops, DVD players, breast pumps, bottle warmers, milk warmer, PS4, Xbox, TV, power tool battery charger, air compressor and etc.
Portable Design: The design is compact and travel-friendly, fitting easily in your vehicle, with a 30-inch cord to extend reach. Perfect for road trips, camping, and vacations.
Built-in Safety Protection: Safety is built-in with protection against short-circuits, overloads, and extreme temperatures, featuring an automatic cooling fan (turns on when temperature reaches 113F ) and a 12-month warranty for added peace of mind.

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9.0

Pro Chaser

Pro Chaser 400W Power Inverters for Vehicles - DC 12v to 110v AC Car Inverter Converter, 6.2A Dual USB Charging Ports, Dual AC Adapter for Air Compressor Laptops (Red)

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Main Highlights

Pro Chaser Power Inverter Basics: Our inverter produces 400 Watts continuous DC to AC power and 800 Watts instantons power, with dual 110V AC power sockets and 6.2A dual USB ports (3.1A each) power outlets.
Ideal for Road Trips: Plug-in & go drawing power from Cigarette Lighter Socket Charger. The 6.2A dual USB ports can be used to charge appliances such as kindles, cellphones, iPads, tablets, cameras, air pods and etc. And the power sockets can be used to supply power to any appliances requiring 300W to 400W power such as laptops, DVD players, breast pumps, bottle warmers and etc.
Portable Design: The compact cellphone-sized design ideal for carrying around in vehicles. The 30 inch (75 cm) cord allows the inverter to reach out long towards back seat. Ideal for road trips, camping & vacations.
Built-in Safety ProtectionThe built-in fuse provides full protection against short-circuit, over-load, low-voltage, over-voltage & over-temperature. The cooling fan turns on automatically when internal temperature reaches 113F (45), maintaining the working temperature in a cool and safe range.
Durable Metal HousingDurable metal housing provides advanced protection from drops and bumps. Evenly colored housing with neat laser print on the surface delivers fashionable finish. 12-month Warranty.

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8.8

Save 10%

DrimMek

400W Car Power Inverter - Dual DC 12V to 110V AC Car Plug Adapter Outlets, Fast Charging USB C 65W & 24W Port, Power Inverters for Vehicles, Laptop Car Charger, Road Trips

10% OffFree Shipping

Main Highlights

4-in-1The 4-in-1 car inverter, featuring four charging ports, meets the needs of modern families for multi-device charging during travel. Whether it's smartphones, tablets, or laptops, all can be quickly recharged, enhancing the travel experience. This is especially useful for families on road trips or long journeys, making every trip more relaxing and enjoyable
Fast charging, worry-free.With PD65W+QC24W super fast charging, you won't miss important calls or messages due to a dead battery. The inverter also includes two AC outlets, allowing you to power multiple devices simultaneously, such as a child's gaming console and an adult's navigation device.
Because safety brings peace of mind.Safety is a priority with overload, short circuit, and overheating protection mechanisms. The built-in intelligent monitoring system ensures real-time current, voltage, and temperature checks, automatically cutting off power in abnormal situations. Made with 12nm smart chips and 100% aviation aluminum, the product is stable and reliable.
Road trip essentialsThe car inverter is great for outdoor travel and camping. It supplies stable power to smartphones, tablets, laptops and cameras. Moreover, it acts as an emergency backup power source for household appliances such as lights and fans. The car inverter plays a vital role in various situations during trips, meeting different power needs and making our outdoor experiences better
Comprehensive After-Sales SupportFree Return and Exchange Policy: No-reason return or exchange within 30 days of purchase. 24/7 Technical Support: Available via phone, email, or online chat, with a response within 24 hours. Customer Satisfaction Surveys: Regular surveys to improve our service quality.

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8.6

Save 15%

EPANEE

400W Power Inverter 12V DC to 110V AC, Car Charger Plug in Adapter Outlet with PD 65W USB-C&QC 18W Port, Portable Power Converters for Laptop Vehicles Camping Road Trip Essentials Adults

15% OffFree Shipping

Main Highlights

: Our power inverter produces Watts continuous DC to AC power and 800 Watts instantons power, with dual 110V AC power sockets and 1 PD 65W USB-C port and 1 USB-A QC 18W port,this car power inverter can fast charge iphone, macbook and other devices on the trip, and it can also power the air compressor, car vacuum cleaner and other devices.
- : The power inverter built-in fuse provides full protection against short-circuit, over-load, low-voltage, over-voltage & over-temperature. The cooling fan turns on automatically when internal temperature reaches 113F (45), maintaining the working temperature in a cool and safe range.
: Our car power inverter also has a built-in low-noise cooling fan, when the inverter heats up, the intelligent cooling fan automatically rotates at different speeds depending on the power load and temperature, keeping it completely cool even after hours of use. This helps to increase the safety and stability of the inverter when in use.
: 6.7x 4.5x 2.5inches, Light Weight: 0.88 lb (400g). 21.65Inches cables, Our car power converters unique design is more scientific and compact, greatly improving car inverter usability and portability.
: this car power inverters plug-in & go drawing power from Cigarette Lighter Socket Charger. PD 65W USB-C port and 1 USB-A QC 18W which can charge iPhone 14 Pro Max up to 51% in 30 minutes, which is perfect for powering up your electronic devices such as kindles, cellphones, tablets, cameras, air pods and etc. And the power sockets can be used to supply power to any appliances requiring 300W to 400W power such as laptops, DVD players and etc.

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8.3

GEARGO

400W Power Inverter DC 12V to 110V AC Car Charger Converter with 4.8A Dual USB Ports and 2 AC Outlets Car Adapter (Black)

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Main Highlights

Upgrade 400W Power InverterProvides 400 watts continuous DC to AC power and 600 watts of peak power.This car power inverter features dual 110V AC outlets and 2 USB ports, great for charging string lights, laptop, breast pump, CPAP machine, nebulizer, game console, kindle, DVD players, lights, iPhones, iPad, and other electronic devices.The cigarette lighter of a car generally can only drive electrical appliances of about 150w.
Fast ChargingDual 110V AC outlets can charge larger devices such as laptops and tablets or plug in a new adapter for more charging needs; 2 USB charging ports (0-2.4A)can automatically detect your devices to deliver optimal charging speed, a good choice as requisite car accessories.
Double protection mechanismSmart chip + built-in fuse double protection mechanism.Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting, overloads, and overcharging. Once the product detects a fault by itself, the inverter will automatically turn off the current output and light up a red light to remind the user.
Portable design for journeyiPhone-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.The length of the Cord is 19.68 inch, easily reach the backseat, with fastening tape,which is more convenient to keep.
Smart Premium Cooling EffectDurable metal housing provides advanced protection from drops and bumps.Built-in silent automatic temperature-controlled cooling fan helps reduce heat and prevent shortages. What You Get: GELOO 400W car power inverter, user manual, 18 months warranty and 24 hours customer service.

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8.1

Save 10%

FSATBTNE

400W Power Inverter, FSATBTNE DC 12V to 110V AC Car Plug Adapter Outlet Converter with [65W PD USB-C] & [18W QC USB-A] Fast Charging Ports and 2 AC Outlets Car Power Inverters for Vehicles

10% OffFree Shipping

Main Highlights

4-in-1 Car Power InverterThe 400W Power Inverter features 2 AC outlets, 1 USB-C port (Max 65W), and 1 USB-A port (Max 18W), which can provide 400 watts continuous DC to AC power and 800 watts of peak power, allowing you to charge multiple devices simultaneously, making it ideal for use in driving, road trips, or while camping.
High-Speed 65W ChargingThe Car Inverter can deliver fast and efficient power to a wide range of devices, including smartphones, tablets, laptops, and other electronic devices. Charge your MacBook Pro 14" to 50% in just 37 minutes or quickly power up your iPhone, Galaxy S22, MacBook, and HP laptops.
Built to Last and More SafetyThe aluminum alloy housing provides sturdy housing protection and effectively dissipates heat, ensuring efficient operation for a long time. Built-in advanced MCU intelligent chips, automatically identify the voltage and current required by different devices, preventing machine overheating, undervoltage, overcurrent, overvoltage, overload, and short circuits.
Rapid Cooling with Minimal NoiseThe Inverter's built-in intelligent cooling fan and temperature sensor, according to the working state of the inverter and the ambient temperature automatically adjust the fan speed, to ensure that in any case can maintain the good working condition of the machine. Whether at home, office or in the car, you can enjoy a comfortable and quiet electricity-use environment.
Compact and Portable DesignCar Outlet Adapter is compact and Lightweight like the iPhone (size: 4.6*3.1*1.8 inches), which is conveniently portable. The 24-inch cigarette lighter plug allows the power inverter to be plugged into almost any vehicle, whether in the car or on the road, it is the ideal choice to make your journey worry-free.
What You GetFSATBTNE 400W Power Inverter with 24-inch cigarette lighter plug, user manual, 24-month warranty, and friendly customer service. If you aren't satisfied with the product, please feel free to contact us, and we will solve it for you in the first time.

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Best Value

8.1

Save 30%

FOVAL

FOVAL 400W Power Inverter 12V DC to 110V AC Car Plug Adapter Outlet Converter with [65W PD USB-C] & [18W QC USB-A] Fast Charging Ports and 2 AC Outlets Car Power Inverters for Vehicles

30% OffFree Shipping

Main Highlights

4-in-1 Car Power InverterThe 400W Power Inverter features 2 AC outlets, 1 USB-C port (Max 65W), and 1 USB-A port (Max 18W), which can provide 400 watts continuous DC to AC power and 800 watts of peak power, allowing you to charge multiple devices simultaneously, making it ideal for use in driving, road trips, or while camping.
High-Speed 65W ChargingThe Car Inverter can deliver fast and efficient power to a wide range of devices, including smartphones, tablets, laptops, and other electronic devices. Charge your MacBook Pro 14" to 50% in just 37 minutes or quickly power up your iPhone, Galaxy S22, iPad, MacBook, and HP laptops.
Built to Last and More SafetyThe aluminum alloy housing provides sturdy housing protection and effectively dissipates heat, ensuring efficient operation for a long time. Built-in advanced MCU intelligent chips, automatically identify the voltage and current required by different devices, preventing machine overheating, undervoltage, overcurrent, overvoltage, overload, and short circuits.
Rapid Cooling with Minimal NoiseThe Inverter's built-in intelligent cooling fan and temperature sensor, according to the working state of the inverter and the ambient temperature automatically adjust the fan speed, to ensure that in any case can maintain the good working condition of the machine. Whether at home, office or in the car, you can enjoy a comfortable and quiet electricity-use environment.
Compact and Portable DesignCar Outlet Adapter is compact and Lightweight like the iPhone (size: 4.6*3.1*1.8 inches), which is conveniently portable. The 24-inch cigarette lighter plug allows the power inverter to be plugged into almost any vehicle, whether in the car or on the road, it is the ideal choice to make your journey worry-free.
What You GetFOVAL 400W Power Inverter with 24-inch cigarette lighter plug, user manual, 24-month warranty, and friendly customer service. If you aren't satisfied with the product, please feel free to contact us, and we will solve it for you in the first time.

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Our Best Overall Choice

Best Choice

9.7

BESTEK

BESTEK 400W Pure Sine Wave Power Inverter - DC 12V to 110V AC Converter, Fast Car Charger Adapter with 30W USB-C/18W Quick Charge/Dual 110V AC Outlet, Car Plug Adapter Outlet for Laptop

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Powerful DC to AC Inverter: Converts 12V DC from your car into 110V AC, providing 400W of continuous DC to AC power and 800W peak surge during load start-up. The advanced pure sine wave technology provides high quality AC power equivalent to grid power, which will protect and prolong the life of your electronics and appliances, such as CPAP machines, nebulizers, air pumps, breast pumps and more.
PD30W & QC18W Fast Charging: 400W car charger adapter quick charge supports PD30W (USB-C port) and QC18W (USB-A port) high output. The PD 30W port provides fast charging for iphone series phones. The 18W Quick Charge 3.0 port can charge most Android devices from 0% to 80% in 30 minutes.
Keep Your Devices Safety Charging: BESTEK 400Watt car power inverter has provided the advanced intelligent circuity safety system to prevent short-circuit, overvoltage, overload, overcurrent, low-voltage and overheating. Equipped with 2 Smart USB charging ports, which detects your devices automatically to deliver its fastest charge speed up.
Smart Temperature-controlled Silent Fan: The cooling fan will automatically rotate at different speed according to power load and temperature, this design can help to reduce the fan noise. Also the high speed cooling fan protect the inverter against overheating. Superior to modified sine wave inverter, greater drive capability, better protection to sensitive equipment, less audible and electrical noise, less power consumption.
Power Your Outdoor Life: This 400W pure sine wave has 2 AC outlets with PD30W USB-C and QC18W USB-A charging ports and can power up to 4 devices simultaneously. The 400watt power inverter supports most drones, cell phones, iPads, laptops, cameras and other digital devices on the go, as well as power other small appliances/devices such as CPAP medical devices, nebulizers, breast pumps, projectors, TV, speaker, air conditioner, microwave, mini-refrigerator, air pumps, car vacuum cleaners (rated power less than 400W). Great for power outages, emergencies, vacations, cars, RVs, travel trailer, tailgate party, trucks, SUV, Van, or anywhere AC power is needed.
Compatible with TeslaThe input voltage of the inverter is 11-17V, perfectly suitable for the 16V cigarette lighter socket of Tesla vehicles.
30-Day Hassle-free Return and 18-Month Replacement: To ensure customers have a good shopping experience, we offer a 30-day no-questions-asked return policy and an 18-month gurantee. The BESTEK 400w inverter is the perfect solution for road trips, camping and everyday travel, ensuring you stay connected and powered wherever you go on the road.

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