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Ways to charge a laptop battery without using its original charger

Imagine this situation: you are going on vacation and want to take your laptop to play, work or simply watch series at your vacation spot. However, it is quite easy to take your laptop but forget about the charger, which would be a real pain, right? Fortunately, there are a number of alternatives to charge your laptop battery without having a charger … although it is true that as you will see some of them are a bit extreme.

Alternatives for charging the laptop battery

As we have said before, these alternatives would be for extreme cases such as the fact that you have gone on vacation for a few days and you do not have the possibility of returning home to get the laptop charger for a few days. In other words, do not use these alternatives if you have simply run out of battery in the laptop but you can get the original charger in a short time, since it is undoubtedly the best way to charge the battery.

Buy a universal adapter

Undoubtedly the easiest way to charge your laptop battery when “you’ve been thrown” is to purchase a universal charger that is compatible. Nowadays, with services like Amazon’s, you can have it at your vacation spot in 24 hours, although if you’re in too much of a hurry you can always visit a local computer store since they most likely have a universal charger that works for your computer. .

Universal charger

These chargers are usually a good solution since as a general rule they incorporate a large number of different connectors that make them compatible with almost all laptops on the market, although it is true that you should check that the voltage and amperage parameters are within the range that support your laptop.

In addition, these chargers, although they are not too good, are quite cheap and for just over 20 euros you will solve the problem in one fell swoop. In addition, it will serve you for other occasions, such as if the place where you have gone on vacation is permanent, you can leave this new universal charger there permanently and you will no longer have to worry about carrying the charger along with the laptop every time you go.

An external battery can solve all your problems

Depending on the model of laptop you have, you may be able to use one of its ports USB-C to charge the battery, in which case if you have an external battery you can solve the game by using it to charge the laptop.

Extreme battery

Normally external batteries are designed to charge the battery of smartphones and other less powerful electronic devices, but of course if your laptop can be charged by USB-C they can also be used to charge the battery of it.

The problem with this method is that most laptops need 8V to 12V while most external batteries provide only 5V, which means that you will also need to make sure that your power bank supports 12V or more. For example, Anker’s PowerCore external battery is an excellent option because it provides up to 20V of power and has a 26800 mAh battery, making it perfectly suitable for laptops.

Do you have tweezers? Your car battery can charge the laptop

If you do not have an external battery or you cannot / do not want to buy a universal charger, your car battery may be used to charge the laptop battery. Be careful because this is an extreme method that we do not recommend that you use, but because it works, it should work.

Battery clamps

You will obviously need some clamps with which to bridge the car battery and an energy inverter, such as the 200W current inverter from Bestek that will give you up to 200W of power.

The bad part of this is that you will have to leave the power inverter somewhere, and it is a large and heavy element and also not everyone has and costs money to buy.

With a mobile charger? Yes, if the laptop is USB-C

Today most smartphones already have chargers with USB-C, so if your laptop is also charged via USB-C and the charger is capable of providing enough power, it is also an option that will surprisingly work to charge the laptop battery. . Of course, do not expect the battery to charge as quickly as using its original charger since, as a general rule, smartphone chargers have 30W at most.


One of the good parts of using this method, and as long as your laptop supports charging the battery via USB-C, is that they all have protection systems that detect overloads and excess temperatures, so they are undoubtedly one of the most Safe to charge your laptop when you don’t have the charger handy, even if charging takes place slower than usual.

Is it safe to charge the battery without the original charger?

There is no doubt that the best way to charge a laptop battery is to use its original charger, but as we have mentioned above this is not always possible and sometimes you are forced to use alternative methods. If you do not know what you are doing of course it may not be safe to charge your laptop battery with other methods, so the advice that we are going to give you in this regard is that you always use the original charger or, failing that, a universal charger. but making sure it is of good quality.

Original HP charger

Of course, if your laptop supports charging via USB-C you won’t have to worry so much; This type of connection is beginning to be universal and since it supports charging, both the laptop itself and its battery will already be optimized to work with its current intensity and voltage without any problem.