How To Charge A Laptop In A Car

As technology has advanced, so have the ways we charge our devices. Many people now rely on laptops and other electronics to get through the day and being able to charge them while on the go is essential. This blog post will discuss how to charge a laptop in a car. We will cover the different methods available and provide tips for ensuring your device stays powered up. Let’s get started!

The majority of people prefer laptops over desktops because of their portability. Laptops are compact, lightweight, and easy to carry around. But when you’re on the road and need to use your laptop, chances are you won’t have a power outlet nearby. Then how to charge your laptop in a car?

It’s simple to charge the laptop in the car, but you need a running vehicle and the correct adaptor. So, let’s start!

Can you charge a laptop in a car?

Can I charge A laptop in a car

Yes! Let’s discuss the most basic methods for charging a laptop in a car. This way, you will have a variety of possibilities depending on the equipment available to charge your laptop while traveling.

  • Charge a laptop using an inverter.
  • Charge a laptop using a USB car charger.
  • Charge a laptop using a car battery charger.
  • Charge a laptop using a power bank.
  • Charging a laptop using an adaptor.

Method 1: Charge a laptop using an inverter

Charge a laptop using an inverter

You typically use an Alternating Current (AC) source to charge your laptop. However, a car’s battery produces Direct Current (DC) energy. DC Current cannot be used directly for a device that requires AC power.

As a result, you can charge your laptop using a car inverter and the regular charger that comes with it. The device can be charged by plugging the AC charger into the vehicle’s inverter.

The inverter must be connected directly to the car battery and include all the cables connecting your laptop. Inverters come with different wattages, so make sure to choose one that can handle the wattage of your laptop.

It should start the charging procedure. Double-check that all the cables are correctly attached before trying again.

Method 2: Charge a laptop using a USB car charger

Charge a laptop using a USB Charger

A USB laptop charger is another easy method for charging a laptop in your vehicle. Use the USB ports in the car. These days a lot of cars have built-in USB-A or USB-C ports.

A laptop charger with a Type-C USB port will provide a proper voltage supply from the car’s battery to the laptop’s battery.

You can quickly recharge your laptop while driving by using a USB charger for laptops. And it can save you from carrying a separate power adapter. However, This approach is suitable only if your laptop has a USB Type-C connector.

The procedures for charging a laptop with a USB charger are listed below.

  • Make sure to bring a Type-C cable and a USB Type-C laptop car charger when you travel.
  • Connect your vehicle’s charging connector to the Type-C USB car laptop charger.
  • Use the USB Type-C cable to connect the charger and the laptop after you’ve attached it to the vehicle’s port.

Be sure to choose one compatible with your laptop’s power requirements. Some USB car chargers offer two or more ports, which allows you to charge multiple devices.

Before using the device, ensure it is compatible with your vehicle. This is an easy way to use a USB charger to quickly charge your laptop battery in your vehicle.

Method 3: Charge a laptop using a car battery charger

Charge a laptop using a car battery charger

You may use a car charger to plug in and charge your laptop directly when you are in a car. It functions exactly like a laptop charger. The only difference is the power jack.

You can attach your laptop to the cigarette lighter socket in the car’s power outlet. The charger’s end must be connected to the cigarette lighter plug in your vehicle, and the other end must go into the charging port on your laptop.

The cost of a vehicle laptop charger is typically not expensive and easily available in electronics stores. Make sure this charger is compatible with the charging port on your laptop before purchasing it. You can’t charge your laptop if it isn’t compatible.

  • Get a laptop charger for your vehicle that perfectly fits the power port on your computer.
  • Start your vehicle.
  • Connect the charger, with one end connected to the laptop you want to charge and the other connected to your car’s power port.

NOTE: Never leave your laptop in a car. It can be damaged because of overheating.

Method 4: Charge a laptop using a power bank

Charge a laptop using a power bank

The simplest way to charge a laptop in a car is to use a power bank. A power bank is a portable battery that can supply an external source of electrical energy for charging devices. There are many different models of power banks.

These power banks work like the ones you use to charge your smartphone. You will need a power bank with a larger capacity for a laptop. A laptop’s battery wants a minimum of 40W to charge up, so you must buy a laptop power bank accordingly. 

When the power bank is connected to a laptop, it will provide enough power to charge the device. Charging your laptop using a power bank is quick and convenient, as you don’t need an outlet or other tools.

Here are the steps you must take to use a power bank to charge your laptop.

  • Buy a power bank with a minimum 40W capacity.
  • Before starting a car trip, ensure your power bank is fully charged.
  • Connect your laptop to the power bank.
  • Once connected, press and hold the power button on both devices until they turn on and start charging.
  • Check the power bank and laptop’s battery levels to ensure your device is charging correctly.
  • Once the laptop is fully charged, unplug the power bank from the computer and turn off both devices to conserve battery life.

Method 5: Charging a laptop using an adaptor

Charge a laptop using an adaptor.

Another option is to use an adaptor to charge your laptop while driving. An adaptor works as a Current converter, like an inverter charger. It converts the alternating current (AC) from a car’s outlet to the direct current (DC) needed by your device.

The main difference is that a separate wire for charging the laptop is not required. You can use it directly with the laptop’s standard charger.

The following steps will help you use an adaptor to charge the laptop.

  • Buy an adaptor for charging a laptop in a vehicle. It is essential to check the current rating of your adaptor before purchasing it. 
  • Connect the adaptor to the power source.
  • Then, you can connect your laptop charger to the adaptor’s port and the laptop’s charging port.
  • Start charging your laptop using the adaptor.

This is one of the simplest methods for charging a laptop in a car. All you need is an adaptor, which you can always bring along while traveling with your laptop.


How To Charge Laptop Battery Manually

Is it secure to use your car to charge a laptop?

Yes, charging your laptop in a car is safe, but you must use the correct power supplies and connection. To prevent any danger or harm, ensure you verify the quality of ports and cables.

If you use the proper power adapter and connector, charging your laptop in the car is completely secure. However, you risk damaging your laptop if you don’t check the components correctly. The wrong equipment can harm your laptop’s power ports and the inverter charger.

Remember to avoid leaving your laptop plugged in for an extended period while it is charging. If you frequently charge your laptop from the car battery when it is stationed or leave it overnight for charging, it will significantly lower the power in your car battery.

Does Charging the Laptop Drain the Car’s Battery?

Yes, if the car engine is off and you are charging your laptop; otherwise, no, the laptop does not use much power unless you are working hard. When the engine is running, the car’s battery charges automatically.

Can a car outlet power a laptop?

Most laptops charge using a power inverter or a laptop charger, both of which can be plugged into the cigarette lighter outlet in your car, and both options are relatively inexpensive. However, you must ensure that the voltage output from the inverter or charger matches your laptop’s requirements.

It won’t charge and could damage your device if it doesn’t match. Additionally, if you plan on using a power inverter, make sure that you choose a model which can handle the power your laptop needs.

What type of car outlet is necessary?

The most common car outlet today is the cigarette lighter socket, which has an output of 12V DC and usually 5 to 10 amps. This should be more than enough to charge most laptops. However, you should check the specifications of your laptop to make sure.

The cigarette lighter socket is also an excellent option for charging other portable electronic devices such as tablets, phones, and digital cameras.

Are car sockets AC or DC?

Car sockets are DC or direct current. DC power has a positive charge and is not constantly switching back and forth between positive and negative like AC power.

DC power is much easier to store in batteries than AC power, which makes it ideal for powering things like cars. That’s why car sockets are designed to supply DC power.

What adapter do I need to plug a laptop into my car?

To charge your laptop in the car, you’ll need an adapter that converts the DC power from the car socket into AC power (alternating current) that your laptop can use. This is typically done with an inverter device that plugs into the car’s cigarette lighter or 12V socket.

What voltage is a car outlet?

The standard voltage of a car’s cigarette lighter socket is 12V DC. This should be more than enough to charge most laptops. However, check your laptop’s specifications to ensure the voltage matches.

Can I use a cigarette lighter as a power outlet?

Yes, you can use a cigarette lighter as a power outlet to charge your laptop in the car. This is an easy and convenient way to keep your laptop charged while you’re on the go.

How long will an inverter run on a car battery?

The amount of power an inverter can draw from a car battery depends on the size and type of battery and the wattage of the inverter in use.

Generally speaking, most standard car batteries will be able to provide enough power for an inverter rated up to 300W for around one hour. If you plan to charge your laptop for an extended period, it’s best to use an inverter rated at 250W or less.

Important Safety Tips

No matter which method you use to charge your laptop in a car, it is vital to observe some safety tips. Always ensure the inverter or charger has been appropriately connected, and inspect the cables and other components for any signs of wear or damage.

Please do not leave your laptop unattended while it is in the car, and make sure to unplug the charger when finished charging.


In conclusion, how to charge a laptop in a car is easy and safe with the proper preparations and precautions. With the help of an inverter and the proper extension cords, you can quickly charge your laptop.

So, if you want to use the laptop when traveling in a car, you can use any of the above methods to charge it. You can use the car inverter, USB Type-C charger, power bank, adapter, or car laptop charger.

These techniques are practical and can make it simple for you to start a laptop. To ensure safety, check the wires’ compatibility and quality.


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