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How to accurately measure the circular mouth size of a laptop charger?

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.04.16
The following are methods to measure the circular mouth size of a laptop charger.



1. Confirm the brand and model of the computer

The round mouth size of laptop chargers from different brands and models may vary, so it is necessary to confirm the computer brand and model before measurement. You can search for the computer manual or view the model information on the computer.

2. Use a caliper or ruler

To measure the outer diameter of the round mouth of a laptop charger, you can use a caliper or ruler. Place the starting point of the caliper or ruler on the outermost side of the plug, and then gently move the caliper or ruler to the other side of the plug. This will tell you the outer diameter of the round mouth of the computer charger.

3. Pay attention to the correct unit

When measuring the round mouth size of a laptop charger, make sure to use the correct units. Normally, the round mouth size of the charger is measured in millimeters (mm). If you use inches or other units of measurement incorrectly, it will be difficult to find the correct charger.

4. Pay special attention to conductive needles

Some laptop chargers require conductive pins at the round mouth to charge properly. At this time, you not only need to pay attention to the plug size, but also need to confirm the position and quantity of conductive pins. Before measurement, it is best to search for relevant information in the manual or relevant websites.

By following the above precautions and measurement methods, you can successfully measure the size of the circular mouth of the laptop charger. When choosing a charger, please remember to confirm whether the chip compatibility and power match to avoid damage to the computer.
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