How to choose the right charger for your laptop?

laptop charger
laptop charger

Last updated: July 10, 2023

When it comes to purchasing a charger to power and charge your laptop, it's easy to feel lost when faced with the multitude of options available on the market. How to choose the right charger? What criteria should be taken into account to ensure quality and compatibility?

If you are new to this subject, don't worry, this article is here to enlighten you. We will guide you step by step so that you can make an informed decision and find the charger that is perfectly suited to your laptop.

Understand the technical specifications

When it comes to choosing the right charger for your laptop, it's essential to understand the technical specifications that impact its compatibility and charging performance. To help you in this process, let's look at the main elements to take into account:

Voltage and Current: The key parameters to assess

First of all, it is crucial to take into consideration the voltage and current required for your laptop. The voltage, expressed in volts (V), and the current, measured in amps (A), must match your computer's specifications. By carefully checking these values, you can ensure that the charger you are considering purchasing is perfectly compatible. Indeed, using an inappropriate voltage or current could damage your laptop.

Wattage: The total power supplied by the charger

Then, it is essential to take into account the wattage, which represents the total power provided by the charger. Wattage is calculated by multiplying voltage by current (Wattage = Voltage x Current). Make sure the wattage of the charger is equal to or greater than that specified by your laptop. Opting for insufficient wattage could result in slow charging or an inability to adequately power your device.

By carefully understanding these technical specifications, you will be able to choose a charger that perfectly matches the needs of your laptop. In the next section, we'll cover how to read information about your current charger to better understand its features.

How to read information about your current charger

To choose the right replacement charger, it is crucial to know how to read and interpret the information on your current charger. Here are the essentials to look for and understand:

Voltage (V): Checks the indicated value

First of all, regarding the voltage, carefully check the value indicated on the charger label. It can be expressed in volts (V) or abbreviated “VDC” (volts direct current). Make sure this value matches the voltage required by your laptop. Improper voltage can cause charging issues and damage your laptop.

Current (A): Checks the current value

Then pay special attention to the current. Find the current value indicated on the charger label. Sometimes you will find something like “Output” followed by a number and “A” or “mA” (milliamperes). Make sure this value matches or exceeds the power demand of your laptop. Insufficient current may result in slow charging or an inability to efficiently power your device.

Wattage (W): Checks the total power

Additionally, if the wattage (power in watts) is not explicitly stated, you can calculate it by multiplying the voltage (in volts) by the current (in amps). Check that the total wattage meets the requirements of your laptop. This information is crucial to ensure that the charger is capable of providing the necessary power to your laptop, thus avoiding charging and operating problems.

portable battery-charger

How to Select the Right Replacement Charger

Now that you understand the necessary technical specifications, let's take a detailed look at how to choose the right replacement charger for your laptop. Here are some important considerations to take into account:

Original Brands vs. Third Party Brands

First of all, it is crucial to compare the original brands recommended by your laptop manufacturer with third-party brands. Original brands usually offer the best compatibility and quality because they are specifically designed to work with your laptop model. However, they can be more expensive.

Third-party brands, on the other hand, offer cheaper options. However, it is essential to check their reputation, certification and compliance with security standards. Read user reviews and gather reliable information about the brand before making your decision.

Technical compatibility

In addition to voltage, current, and wattage specifications, it is important to check connector compatibility. Laptops use different types of connectors, such as round, square, L, or T-tip. Make sure the replacement charger has the correct connector for your laptop. Also, check the polarity of the connector (positive or negative) to avoid any compatibility issues.

 Quality and safety

Always opt for a quality replacement charger. Check safety certifications such as CE, UL or FCC to ensure the charger meets international standards. Look for additional features such as protection against overvoltage, short circuit and overheating, which ensure safe use of your laptop.

Warranty and customer service

Checks if the replacement charger comes with a warranty. A long-term warranty demonstrates the manufacturer's confidence in the durability of the product. Also, make sure the manufacturer or seller offers good customer service if you have any problems or questions about the charger.