How to choose your laptop charger power adapter?

We all know that people's work and even life are closely related to laptops.

Imagine you’re headed out of town for a weekend getaway. Maybe you’re going to a friend’s destination wedding or a family trip to the beach, or perhaps it’s camping with your friends. You decide to bring your laptop with you because it’ll be nice to stream movies, get some work done, or play a PC game in your downtime. A laptop can help you feel at home when you’re away from home.
Oops! When you’re unpacking in your hotel room, you realize that you’ve forgotten to pack your laptop charger (or worse yet, you accidentally leave it in the airport power outlet). Your laptop only has a 10% charge left, so it looks like you’re going to have to do without it on this trip. That essential email to the boss will have to wait.
laptop
You can take your laptop anywhere you go, whether you're working at home, the coffee shop or the park. One of the most important laptop accessories you can have is your laptop adapter or power cord. Your laptop needs power to keep you on the go, and a lost or broken laptop adapter can seriously slow you down. Even if you haven't lost your laptop adapter, you may want to purchase a back-up power cord to keep at home or at the office. Here are some steps to help you quickly find a replacement laptop adapter or power cord, so you can get back to work and play.

Finding the Right Model of Adapter
Since there are so many different adapters on the market, it's essential to check which type of adapter a laptop requires before purchase. Most adapters are marketed for specific brands and models of laptops. They will also list the voltage, current, and polarity of the adapter. This way, laptop owners can select the appropriate adapter for their devices. Finding the correct adapter for a laptop means checking the laptop's model number and power requirements.

Get the laptop's model number. This is usually printed on a small sticker affixed to the underside of the laptop.
Get the power requirements for the laptop. This is also printed on a small sticker affixed to the underside of the laptop. It may also be printed near the laptop power port. Look for the amperage and the voltage required.
Look up the model number online to find if there are compatible adapters available. The voltage and amperage of the adapter need to match the requirements of the laptop.
Compare the connector type of the laptop adapter to any available adapters found online. They need to match to ensure that the adapter can plug into the laptop.

Choosing the right adapter specs
The adapter output V matches the rated input V of the device.
The adapter output is greater or equal to the devices rated mAh or A.
The plug fits into your device and has the correct polarity.

Choosing the plug
Hopefully, you have the size of the devices plug and can just check the adapters measurements, there are two measurements for these types of connectors.
OD – Outer diameter of the plug.
ID – Inner diameter of the plug.

For HP Laptop Charger
65W with 7.4mm x 5.0mm tip
90W with 7.4mm x 5.0mm tip
120W with 7.4mm x 5.0mm tip
150W with 7.4mm x 5.0mm tip
230W with 7.4mm x 5.0mm tip
65W with 4.5mm x 3.0mm tip (blue)
90W with 4.5mm x 3.0mm tip (blue)
120W with 4.5mm x 3.0mm tip (blue)
150W with 4.5mm x 3.0mm tip (blue)
200W with 4.5mm x 3.0mm tip (blue)
For Dell Laptop Charger
65W with 7.4mm x 5.0mm tip
90W with 7.4mm x 5.0mm tip
130W with 7.4mm x 5.0mm tip
180W with 7.4mm x 5.0mm tip
240W with 7.4mm x 5.0mm tip
45W with 4.5mm x 3.0mm tip
65W with 4.5mm x 3.0mm tip
130W with 4.5mm x 3.0mm tip
HP Laptop Charger

Dell Laptop Charger

Samsung Laptop Charger

Asus Laptop Charger

Lenove Laptop Charger

Toshiba Laptop Charger

Micorsoft Laptop Charger

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