The Best Car Power Inverter 2021

An inverter is a very handy device that allows you to use electronic devices on the go at times when electricity is not always available.

By gadgets we mean just about anything you can think of: televisions, stoves, kitchen appliances, power tools, entertainment systems… just to name a few!

Any device that runs on AC power needs an inverter if you want to connect it to a car for charging or starting.

It is a device that can improve the lives of campers, business people and recreational users.

It can be difficult to know exactly where to start when it comes to finding the best inverter for your car. That’s why we’re here to help you find the perfect inverter for your situation.

Before we start recommending the best car inverters, let’s make sure you know everything you need to know to make the best buying decision.


How Does a Power Inverter Work?

It is difficult to understand what an inverter is if you do not understand how energy works. Car batteries provide DC power, while most consumer electronics operate on AC power. Let’s take a closer look at electrical currents. The voltages work together to conduct and transfer electrical energy.

DC voltage DC voltage is a constant flow of electrons in one direction.

AC voltage The AC voltage changes in an oscillating repetition to create waves. An upward curve indicates the current in a positive direction, while a downward curve indicates the current in a negative direction.

This is where the inverter comes in handy: car batteries provide DC voltage, but with a car inverter device in use, AC devices can be used in your car. Inverters do this by changing the polarity of the DC supplies to create a square wave that works with AC devices. The inverter may include additional components to create a better sine wave, as most consumer electronics work best with a pure sine wave.

Pure Sine-waves vs Modified Square-wave Inverters

A pure sine wave inverter will perform better, while a square wave inverter offers less advanced power conversions. For this reason, pure sine wave inverters will be a more expensive option, although it may be worth the investment as it uses less power, with better AC power. Modified sine wave inverters work well with most light consumer electronics.

Why do we mention this? Well, bad waveforms can disrupt the performance capabilities of your devices. Aside from possible overheating and damage, a weak inverter can cause permanent damage and malfunction. It can also cause noise in the inverter and generally has more limitations in terms of output power and compatible devices.

Hooking up a Power Inverter

Converters also come in a variety of sizes and some are small enough to plug directly into the cigarette lighter. Other inverters may need to be placed under the car seats and connected with longer extension cables. The inverters should never be placed in direct sunlight, damp places or heat sources.

Inverters can be connected to a car battery in different ways. That could be powering devices through the fuse panel, connecting it directly to the battery, using a cigarette lighter port as mentioned above, or even connecting it to a 12v accessory socket. It is important to note that inverters connected through 12V accessory plugs or cigarette lighter sockets are limited to a maximum current of 10 amps.

Doing the Math

There are two things to determine when choosing an inverter for your requirements:

  1. Determining the power requirements

The power requirements for a device can be determined using the equation

Power (watts) = current (amps) x voltage (volts)

Multiply a device’s input amps and volts to determine wattage usage. The power of most devices can also be found online.

   2. Determining the fuse rating/circuit protection

Fuse Rating (A) = Power Requirements (Watts) * Backup Hours (in Hours) / Battery Voltage (in Volts)

The power requirement of a device multiplied by the number of hours it needs to charge, divided by the output voltage of the car’s inverter, yields the capacity your battery needs.

Note that many devices will list continuous and maximum power outputs. Maximum power refers to the power that an inverter can only provide for a limited time. Continuous power is the average wattage that an inverter will deliver as a limit for normal operation. A device that draws a combined total needs an inverter with the same total continuous power. An inverter with an equal total peak is not enough to power the device.

What to Look for when Choosing the Best Power Inverter for your Car

The variety of car inverters on sale is absolutely overwhelming. They can be bought in stores, online and even in auto parts stores. They are available in all price ranges, so there should be something for your budget. There are also different power capacities to meet different needs; In general, there are many points to consider, so keep the following in mind when choosing the right inverter for your car.

Intended Use

The first factor to consider is the intended use of your car’s inverter. If you’re looking for an inverter to power larger appliances, it’s best to purchase a car inverter that plugs directly into the battery. Smaller appliances require no more than an inverter plugged into a cigarette lighter.

Need to power more than one device at a time? So it may be a good idea to go for a model with multiple outputs. If you are using the cigarette lighter plug for other purposes, it may be better to buy a wired inverter. Switch cars? Perhaps a small portable inverter is best after all. Determining the intended purpose for your car’s inverter can make your search that much easier.

Where will the Inverter be used?

Cars, SUVs and minivans are best suited for compact and lightweight inverters. Good devices to use with this class of inverters include cell phones, multimedia equipment, and laptops. Trucks, boats and RVs have much higher power and can power appliances such as kitchen appliances, televisions and music systems. Since you are choosing an inverter for your car, it is important to note that there is a limit to the amount of power that can be invested

Maximum Current

Cars generally use 15 A or 20 A of current. Older cars can often only handle 10 A fuses. When purchasing an inverter for your car, keep in mind that a high-power inverter or electrical appliances that require more voltage may blow a fuse or cause serious damage to both the vehicle and the device. In general, a 12 volt cigarette lighter will draw 120 volts AC and has a safe maximum load of 150 watts for an inverter.

Smaller digital items such as laptops, tablets, cameras and cell phones require little power and are compatible with most automotive power converters, especially pure sine wave inverters. Heating devices such as heaters, hair dryers and other high voltage devices should not be connected to the car’s power converters.

Powerful electrical appliances of more than 150 watts are best charged by connecting the inverter directly to the car battery. It is a good idea to use safety precautions and the capacity of your car battery to ensure that the battery is not overcharged. A dead battery can damage the vehicle and cause the battery to ignite.

Safety Precautions

With the cheap car inverter, you get what you pay for: a modified low-power square sine wave. In most cases, a cheaper car inverter will suffice for charging home appliances, but it may be incompatible with others. Do your research and read reviews online to make sure your device is compatible with a cheaper model.

If you are using an older vehicle model, be sure to unplug all power converters as soon as the car is turned off. Inverters continue to consume electricity and can drain batteries if left plugged in even when no device is connected.

Choosing the wrong inverter for your car can lead to problems such as a blown cigarette fuse, a dead car battery, faulty dashboard warning lights, and an airbag light that activates due to low voltage.

Most units have an alarm to alert you to low power sources, but it may be worth the investment to purchase a unit that automatically shuts off when the power transferred is too low.

Best Car Power Inverter for your Laptop

Always make sure your laptop is compatible with the power converters you plan to use for charging. If you’re not sure, a good place to start is to contact your computer manufacturer or search online.

Check the fuse size of your car lighter socket

Modified sine wave inverters are much cheaper but can cause interference and broken screens on computer and printer screens. Pure sine wave inverters are the safest type of inverter, but they cost much more. When choosing an inverter, consider the size of the fuse in your car’s cigarette lighter. This information can be found in the vehicle owner’s manual and should look like this: 10 amp 12 volt cigarette lighter; 15 amp 12 volt cigarette lighter; 20 amp 12 volt cigarette lighter. Most newer car models have 15 amps, while large SUVs and pickups typically have 20 amps.

Check the wattage of your device

The wattage of a device can be found by multiplying the device’s amps by volts. Just check the specifications of the device to find the number of amps and plug it into the equation Amps x Volts (120 volts for a 12 volt cigarette lighter plug) = Watts. For example, a 2 amp device draws 240 watts = 2 amps x 120 volts.

Power Inverter Features to Consider

Once you’re armed with the size of your car’s cigarette lighter fuse and the wattage required for your device or devices you want to charge, you’re ready to go shopping! Features to consider include:

  • Size and weight: choose something that is practical for its intended use. If you are looking for an inverter for use on vacation or business trips, smaller inverters that are portable and can be connected to any vehicle are the ideal choice.
  • Protection:Devices with safe charging functions and built-in amplifier limits protect your device from damage such as overheating, low and high voltage charging and short circuits.
  • Durability:Most current reversing devices are constructed with a rugged outer casing to protect against shock and damage. These are good features to look for as your device will last much longer. By integrating fans for cooling, you prevent shortages and your device also lasts longer.
  • Outlets: some devices have multiple charging points and even USB ports for USB-compatible devices. Be sure to check both the continuous and the instantaneous power of the inverter.

Reviews of our Favorite Power Inverters for Cars

1. BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

This car inverter has a durable metal housing and a fan to prevent overheating. It’s the perfect travel size and has enough ports to charge multiple devices at once.

There’s nothing to fault here – this is a good budget buy that still offers value and quality.

The Bestek inverter is functional, compact and can charge multiple devices at the same time. It can be safely connected to both the car cigarette lighter socket and the car battery.

Our choice for the best inverter for charging a laptop in your car is the Bestek 300W Power Inverter. Multiple devices can be charged simultaneously with a power outlet and a USB port. This inverter provides direct DC to 300 Watt AC when connected to the car battery and safely delivers up to 150 Watts when connected to the cigarette lighter.

We love the size of this device – it’s the size of an iPhone and it’s incredibly portable. It has a safety feature to ensure safe charging without short circuit or overheating and provides fast charging for any suitable device.

Remember to unplug the device completely when not in use; Even when turned off and the car is off, the inverter can still consume power and drain your car battery. Never place the inverter in direct sunlight or near heat-sensitive objects.

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 of continuous DC-to-AC and 700 watts of instant power, with 2 power outlets and 2 USB ports
  • Fast Charging: Two 110V AC outputs 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 necessary car accessories
  • Ultra-compact and lightweight: iPhone-sized design, ideal for use during vacations, business trips and camping. Thanks to the 24-inch cigarette lighter plug, the inverter can be connected to almost any vehicle
  • Multiple Protection: Built-in 40 amp fuse to protect your device. Safe charging design provides protection against overheating, low and high voltage charging, short circuit
  • The durable metal housing provides advanced protection against drops and impacts The intelligent cooling fan system makes the car’s inverter very quiet during operation and the fan runs faster when the unit heats up or the output power exceeds 70 W. 18-month warranty.


  • Durable metal housing
  • Built-in voltage protection
  • Multiple outputs


  • For in-car use and 12 volt DC only
  • Not compatible with high power devices
  • Modified Sine Wave
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2. Foval 150W Car Power Inverter DC 12V to 110V AC Converter with 3.1A Dual USB Car Charger

Weighing about 8 ounces, this super-portable inverter is the size of a credit card. With an aluminum housing, a durable metal housing, a quiet fan for cooling and surge protection devices, Foval’s 150W range is ideal for charging essentials on any journey.

In terms of power, this inverter offers excellent value for money.

Its handy size, portability and pocket size make this 150W Foval inverter the best choice for your car. This inverter also comes with a 16-inch long cord that allows you to work comfortably in the back seat while plugged into the car’s cigarette lighter port.

It has a USB port and a power outlet, which can give a total current output of 3.1 amps. It also comes with a built-in load protection fuse and is designed to negate surges, overcurrents and other abnormal scenarios.

The built-in silent fan prevents overheating. The inverter’s portability makes it a versatile option for camping, hiking and road trips.

FOVAL 150W Car Power Inverter 12V DC to 110V AC Converter with 3.1A Dual USB Car Charger

  • High-quality 150 watt car inverter with 2 USB ports and sockets. Dual USB ports can charge most phones and tablets simultaneously (up to 3.1A total output), while wall outlets are ideal for Christmas gifts, charging string lights, laptop, breast pump, machine CPAP, nebulizer, game console, Kindle, TV, DVD players , lighting, iPad and other electronic devices
  • Travel Kit – Almost the size of a credit card – 3.2 x 2.5 x 1.5 inches, space-saving and easy to store, with aluminum shell design, extremely portable and lightweight at only 8 oz+
    Mufti Protection: Built-in fuse to protect your device, stable charging design provides protection against overheating, low and high voltage charging, short circuit, overload and overload
  • The durable metal housing offers advanced protection against drops and bumps. Very quiet built-in cooling fan helps reduce heat and prevents short circuits.


  • Portability
  • Built-in overcurrent and overvoltage protection
  • Quiet fan


  • Low power device
  • Current output limited to 3.1 amps
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3. VOLTCUBE 400W Car Power Inverter 12V DC to 110V AC Converter with 3.1A Dual USB Car Adapter

With an attractive blue color scheme, a durable metal housing, a low-noise fan to prevent overheating and fuse protection, the Voltcube 400W inverter is ideal for charging devices on the go.

A good price for a stylish pocket-sized car inverter.

The Voltcube 400W inverter is portable and comes with a USB port and a 110V AC outlet. This makes it the perfect option for charging on the go. Thanks to the 17-inch long cord that comes with the inverter, you can also work comfortably from the back seat.

One of the USB ports offers a 2.1A output, allowing for fast charging. The inverter comes with overcurrent protection and is not designed for the use of energy-intensive appliances such as hair dryers, curling irons and heaters.

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 inverter delivers 400 watts DC to AC power and 800 watts peak power to two independent AC outputs for multi-purpose charging (plugs are now further apart for larger plugs). AC plugs are useful for charging your laptop and digital camera, or for powering your TV, refrigerator, air mattress, etc.
  • 【DUAL USB PORT: 2 USB ports (each 2.4A, max 4.8A) to power USB compatible devices such as smartphones and tablets.
  • 【STYLISH & DURABLE DESIGN】: Fashionable aluminum honeycomb structure is durable and also looks great. In addition, it provides excellent heat dissipation.
  • 【SAFE FOR DEVICES AND BATTERIES】 – Built-in replaceable 2×30 amps (max 60 amps) fuses protect your device and the low-noise cooling fan prevents overheating, low and high voltage charging, overload, overload and short circuit.
  • 【WORTH A PURCHASE】: The Voltcube 400W car inverter comes with high quality gold plated metal alligator clips, user manual, cigarette lighter socket and 2 replaceable fuses. A 12-month warranty, friendly customer service and lifetime technical support are available at any time.


  • Portability
  • Built-in overcurrent and overvoltage protection
  • Fast Charging


  • Low power device
  • Not suitable for use with 24 V DC outputs
  • No surge protection
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4. Enkey 150W Car Power Inverter DC 12V to 110V AC Converter with 3.1A Dual USB Charger

Another versatile inverter in the under $20 price range, this dual USB charger features rugged construction, comprehensive protection, and quiet cooling.

With such a low price, this is excellent value for money.

This car inverter provides multiple USB and 110V AC outputs for use with multiple devices. Robust metal housing, quiet cooling systems and overcurrent protection make this a very safe device to use in your car. Voltage protection capabilities increase versatility.


  • Portability
  • economic
  • Over-current, over-voltage and over-heat protection


  • It cannot be connected to car batteries.
  • Not suitable for energy-intensive operations.
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5. Ampeak 400W Power Inverter DC 12V to 110V AC Car Inverter with 3.1A Dual USB Converter

No bigger than an iPhone, this offering from Ampeak comes with multiple outlets (two USB 3.1A, two 110V AC), over-current, over-voltage, over-voltage and over-heat protection. In addition, since it can deliver 400 watts, this inverter is suitable for the use of moderately energy-consuming devices.

Although not in the lower price range, the Ampeak power inverter justifies its price.

This Ampeak inverter is conveniently sized, affordably priced and designed for use on the go. With full surge protection, built-in fuses and quiet fans, it is rugged and electrically insulated. The inverter also has an audible alarm to indicate that the device is not working properly. It comes with battery clip cables plus a plug compatible with the cigarette lighter port, increasing versatility.

At this price, it will be difficult to find an inverter that is lighter, more portable, and delivers high power. Multiple devices can be connected at once, making it a great option for camping and road trips.

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

  • 【A really powerful and practical inverter】 Provides 400W DC to AC continuous power, 800W peak capacity, 110V AC output functions and 3.1A dual USB port, ideal for home appliances CA or on travel, camps or workplaces
  • 【Wide Application】 Battery clip cables and cigarette lighter plug cable for different power requirements. Dual 3.1A USB charging ports, great for iPod, smartphone, etc, dual 110V AC outputs, great for laptop, game console, Kindle, TV, etc.
  • 【Ultra compact and lightweight】 iPhone size to save space, easy to store and carry. Ideal for use on long road trips, family vacations and camping. The nearly 26 inch cigarette lighter plug makes the inverter suitable for almost any vehicle
  • 【Full Protection】 Built-in replaceable 35A mini slide fuse * 2 and cooling fan and ABS shell, automatic shutdown protection against over voltage / under voltage / overload / short circuit / overheating. Advanced Low Voltage Alarm Protection
  • 【What You Get】 All our investors are ETL certified. We offer an 18-month hassle-free warranty, 24-hour friendly customer service and 100% customer satisfaction.


  • Portability
  • Built-in protection
  • Can also be attached to the car battery


  • It is not compatible with devices that consume a lot of power and have a high peak demand.
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6. Duracell DRINV400 High Power Inverter, 400 Watt, Black

A compact 400 watt portable inverter with power outlet and USB ports, this offering from Duracell is designed for durability and longevity. It is protected against overcurrent, overvoltage and overheating.

We would even go so far as to call this inverter a bargain

Equipped with an energy-saving on/off switch, two three-pole AC outputs, a USB port (2.1 A) and a durable metal housing, this Duracell inverter is robust, portable and extremely versatile in terms of versatility. The power of 400 watts ensures that you can control multiple devices at the same time and the fact that you can connect the inverter to car batteries also increases the versatility.

This inverter is well equipped with voltage and current protection, making it safe to use in your car. It is suitable for use with electronic devices, hand tools and other equipment away from conventional AC power.

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 domestic AC and USB power and delivers up to 400 watts of peak power and 320 watts of continuous power.
  • It features two 3-pin AC outputs and 2 2.4-amp USB ports, all with protective caps, allowing you to charge and control up to 5 devices simultaneously.
  • Powerful enough to operate televisions, video games, laptops, small hand tools and a wide variety of 115 VAC electronic devices.
  • For applications up to 175 watts, the inverter plugs directly into your car’s DC port; For higher demand applications, the battery terminals pull directly from your car battery.
  • Ideal for mobile workplaces, camping and hiking, the Duracell 400 Watt Tailgate Inverter provides enough power for your everyday needs.


  • portable
  • High power
  • Over-current, over-voltage and over-heat protection


  • It is not compatible with devices that consume a lot of power and have a high peak demand.
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7. Quesvow 300W Power Inverter DC 12V to 110V AC Converter with 4.8A Dual USB Car Charger Adapter-Red

An attractive red color, durable construction and portability make this Quesvow 300 watt inverter ideal for use in your car or SUV. This inverter is equipped with voltage, current and temperature protection.

Very reasonably priced for its features, this inverter is pocket sized.

This portable inverter plugs into the cigarette lighter port and has a long, handy cord for ease of use. One of the USB ports is equipped with fast charging capabilities, which increases the versatility of the inverter. A fan with Automatic Temperature Control (ATC) ensures that the temperature of the device never exceeds 38 degrees. This makes the quesvow a popular choice for controlling essential devices on the go.

The inverter is well equipped with voltage and current protection, making it safe to use in your car. It is suitable for use with electronic devices, hand tools and other equipment away from conventional AC power.


  • portable
  • High power
  • Over-current, over-voltage and over-heat protection


  • It cannot be connected to car batteries.
  • It is not compatible with devices that consume a lot of power and have a high peak demand.
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8. Quesvow 1000W Car Power Inverter DC 12V to 110V 3 AC Outlets Home Car RV Solar Power Converter for Household Appliances in case Emergency, Hurricane, Storm and Outage

Housed in a durable housing, this inverter is extremely portable and can deliver up to 1000 watts, making it suitable for power-hungry devices.

This is one of the more expensive inverters, but the quality of the product justifies its price.

This Quesvow inverter has three different sockets that can supply 1000 watts continuously. It has a maximum resistivity of 2000 watts, making it suitable for high power applications.

The inverter is equipped with voltage, current and overheating protection, making it an ideal choice to take with you on camping trips and excursions. This inverter can also be connected to your vehicle’s batteries to provide emergency power at home during a power outage.


  • portable
  • High power
  • It can be connected to car batteries.


  • Some report that he is hungry for power
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9. EBTOOLS Car Power Inverter, 500W/1000W Inverter 12V DC to 110V AC Car Converter with 2 AC Outlets and 2.1A USB ports

This portable inverter is lightweight, housed in a durable metal housing and is ideal for high power applications. Equipped with protection against voltage, current and overheating, this EBTOOLS product pays great attention to safe operation.

This is a cheap purchase, with excellent value for money.

The EBTOOLS car inverter is equipped with multiple sockets and USB ports. Both the cigarette lighter and the battery clip plugs are present, so the product can be used to power various household appliances outside. The inverter can be purchased in 500W and 1000W configurations, depending on your specific power needs.

It has two replaceable 40 A fuses for overload and short circuit. Fast charging is possible. The durable aluminum housing ensures that the product has a long life.

EBTOOLS Car Power Inverter, 150W Inverter 12V DC to 110V AC Car Converter with 3 AC Outlets, 4.8A Dual USB Ports and 1 Cigarette Lighter, Converter for Laptop, Phone in case Emergency and Outage

  • [300W High Power Inverter]: Provides 150-200 watts of continuous power, 300 watts of peak power, converts 12V DC battery power to standard 110V AC (check if your device has 200W continuous power).
  • [100% Fast Charging] – This inverter is ideal for your Kindles, iPhones, iPads, tablets, MP3 players, cameras and other mobile devices (NOTE: Understand the power consumption of the device Caution! Do not use powerful electrical appliances such as hair dryers , electric heaters, curling irons, etc.)
  • [Multiple Protection] – Built-in 20A fuses, 1 cooling fan. Safe charging design provides protection for you and your device, this inverter has over voltage, overload, under voltage, overheating and short circuit.
  • [Ultra Compact & Less Noise] – 9.2 * 1.7 * 2.5 inch, 0.86 lb weight is portable to carry, durable case provides advanced protection and is easier to cool. Less noise than other inverters.
  • [6-in-1 Wall Socket Design] – Combines 3 sockets, 1 cigarette lighter socket and 2 USB chargers in a compact space-saving design, charges 6 devices at the same time, with the 20-inch power cord you can take your inverter wherever you want, fits well the car’s DC jack.


  • portable
  • Budget friendly
  • It can be connected to car batteries.


  • Only suitable for 12V DC outputs
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