How to Charge Laptop with a Power Bank: A Comprehensive Guide 2023

How to Charge Laptop with a Power Bank

As the world becomes increasingly mobile, staying connected on the go has become more important. However, running out of battery power while working on your laptop in a remote location without access to an electrical outlet is extremely frustrating. Power banks are useful in such situations. 

Do you know how to charge your laptop with a power bank? In this comprehensive guide for 2023, we will provide step-by-step instructions and tips for charging your laptop with a power bank, ensuring that you’re never disconnected from your work or entertainment while on the go. 

Whether you’re a frequent traveller or simply looking for a backup power solution, this guide will help you get the most out of your power bank and laptop.

Understanding Power Banks

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Before we delve into charging your laptop, let’s take a moment to understand what a power bank is. Portable chargers, or power banks, allow you to charge your electronic devices while on the go. They are usually rechargeable batteries. They can range from a small, pocket-sized charger to a large, high-capacity power bank that can charge a laptop. When buying a power bank for your laptop, there are certain factors to consider. 

First, you have to check the capacity of the power bank in milliampere-hours (mAh), a measure of the charge stored by the device. The higher the mAh rating, the more time it can run on your devices. Furthermore, you should ensure that the output voltage of your power bank is compatible with your laptop; most laptops require a 16V-20V voltage range.

Preparing Your Laptop for Charging

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Before charging your laptop with a power bank, choose the right one. There are several factors to consider when selecting a power bank, such as capacity, output voltage, connector types and charging time.

Power bank capacity:

The essential factor to consider while charging your laptop using a power bank is its capacity. The capacity is measured in milliampere hours (mAh), and it decides how much energy the power bank can store to charge laptops, which require more power than smartphones or tablets. So you’ll need a high-capacity power bank to charge your laptop.

For instance, if you use a laptop with a 50Wh battery, you will need at least a power bank with a 10,000mAh capacity. But remember that the conversion from watt-hours (Wh) to milliampere-hours (mAh) is not exact, so it might be safer to go for a power bank with more capacity.

Output voltage and current:

It is also important to consider a power bank’s output voltage and current when charging your laptop. Almost all laptops require a voltage of 19V, so ensure your power bank can provide that. The current, measured in amperes (A), should also be high enough to charge your laptop efficiently. A power bank with a current output of 2.4A or higher should be sufficient to charge most laptops.

Connector types:

The connector type is another important factor to consider. Different laptops have different connectors, so ensure your power bank has the appropriate connectors to charge your laptop. Some power banks come with multiple connector types, which can be handy if you have multiple laptops or devices.

Charging time:

The charging time for your laptop will depend on the capacity of your power bank and the power requirements of your laptop. As a general rule of thumb, it will take 2-3 hours to charge a laptop with a 20,000mAh power bank. Remember that charging times may vary depending on your laptop’s battery capacity and the power bank’s output.

How to Charge a Laptop with a Power Bank without Type C?

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Once you have selected the right power bank, you can begin charging your laptop with a power bank. Here are the steps to follow:

  1. Connect the power bank to your laptop using a charging cable compatible with both devices. Most power banks have a USB output port, while laptops typically use a DC input port. You can use a cable that has a USB connector on one end and a DC connector on the other end to connect the two devices.
  2. Turn on the power bank by pressing the power button.
  3. Your laptop should begin charging automatically. If not, check that the charging cable is properly connected and the power bank is turned on.

During the charging process, it’s essential to monitor the charging progress. Some power banks have LED indicators showing the charge level remaining in the power bank. Keep an eye on this to ensure that the power bank doesn’t run out of charge before your laptop is fully charged.

Using your laptop in power-saving mode while charging is recommended to maximize the charging efficiency. This reduces the power your laptop consumes, allowing it to charge faster.

How to Charge a Laptop without Charger and Power Bank?

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Here are two different ways to charge a laptop without a charger and power bank:

  1. Using a USB-C Cable: If your laptop has a USB-C port, you can use a USB-C cable to charge it. You’ll need a USB-C charger with enough output to support your laptop’s charging requirements.
  2. Using a Universal Adapter: A universal adapter is a device that can convert AC power from an outlet into DC power that your laptop can use. Make sure to select an adapter that is compatible with your laptop’s power requirements.

Troubleshooting Common Issues

While charging your laptop with a power bank is relatively straightforward, a few common issues can arise. Here are some tips for troubleshooting these issues:

  • Power bank not charging laptop: Check that the charging cable is properly connected and the power bank is turned on. If the issue persists, try using a different cable or power bank.
  • Laptop not recognizing the power bank: This can occur if the power bank’s voltage output is incompatible with your laptop. Double-check that the voltage output is within the range recommended for your laptop.
  • Power bank not charging fully: If it is not holding a charge, it may need to be replaced. Also, avoid overcharging your power bank, which can shorten its lifespan.

Best Practices for Using Power Banks

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  • Storing and maintaining it properly is important to get the most out of your power bank. Avoid exposing your power bank to extreme temperatures or direct sunlight, which can damage the battery. It’s also recommended to charge your power bank fully before storing it and to recharge it every few months to prevent the battery from deteriorating.
  • When using power banks, it’s important to do so safely and responsibly. Avoid overcharging or undercharging your devices, as this can damage the battery. Additionally, never attempt to open or modify your power bank, as this can be dangerous and may void the warranty.
  • Finally, if you’re looking for eco-friendly options for power banks, consider investing in a solar-powered power bank. These use solar panels to convert sunlight into energy, providing a sustainable charging solution for your devices.


In conclusion, charging a laptop with a power bank is possible, but you must consider several factors before doing so. Ensure your power bank has enough capacity, output voltage and current, and the appropriate connector types. Also, be aware of the charging time and take necessary safety precautions. Following best practices for using power banks and considering eco-friendly options, you can charge your laptop sustainably and responsibly.


Can I charge a laptop with a power bank?

Yes, you can charge a laptop with a power bank as long as the power bank has enough capacity and output to support your laptop’s charging requirements.

How do I know if my laptop is compatible with a power bank?

Check and compare your laptop’s power requirements to the power bank’s output. Look for a power bank with enough capacity and output to support your laptop’s charging needs.

What should I do before charging my laptop with a power bank?

Shut down your laptop before connecting it to the power bank. Disconnect any peripherals and accessories to ensure a safe and efficient charging process.

Can I charge a Dell laptop with a power bank?

Yes, you can charge a Dell laptop with a power bank as long as the power bank has enough capacity and output to support your laptop’s charging requirements.

How can I maximize the efficiency of charging my laptop with a power bank?

Monitor the charging process and adjust your usage accordingly. Please avoid using your laptop while charging and disconnect any unnecessary peripherals or accessories to reduce power consumption. 

How to charge laptop with an aux cable?

It is not possible to charge a laptop with an aux cable. An aux cable is designed for audio transmission only and cannot power a laptop. Laptops require a power adapter or a power bank to charge the battery.

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