A power adapter is a device that is used to power a laptop, phone, or other portable device and charge its battery. Basically, all these devices are equipped with standard power supplies, but sometimes situations arise when you need to purchase a new one. In this case, it is necessary to select the correct type and model of the adapter.
Instructions
Step 1
Use the internet to find the right power adapter. It will greatly facilitate your search for information, and if necessary, you can read consumer reviews about a particular device.
Step 2
Start by looking for information on your portable device model. Be sure to find a list of all power adapter models that can be used with a similar brand. Copy the information found into a text document or create a table in Excel for further comparison and choosing the best option.
Step 3
Determine the type of power connector on your portable device. The fact is that sometimes even devices of the same brand have different connectors. Filter out any unsuitable devices in the adapter table. This stage is very important, as if the connection is incorrect, the battery can be damaged.
Step 4
Compare the output voltage of the power adapter with the voltage required to power your portable device. It must match, otherwise the device will break down.
Step 5
Select from the remaining list of power adapters one whose power is not lower than that required for your portable device. You can find out this information by reading the instructions for the device. And for the power supply, the power will be equal to the product of the output voltage and the output current, which are indicated in the description. If you choose an adapter with a power reserve, then it will be more reliable, since it heats up less and thus lasts longer.
Step 6
Also, be sure to pay attention to such a parameter as voltage polarity. It should be the same for the power supply and the portable device. Otherwise, power will not be supplied.
Step 7
Find out which computer store sells the selected power adapter model. Order the device. You can also buy such things in online stores.
