Choosing the right ac adapter is all a matter of voltage,output power,and proper connection.If all of these things do not match the original specifications of your current laptop ac adapters,then a new laptop adapter will likely do not work on your notebook and may potentially cause a lot of damage.In the end,most notebook ac adapters have a list of computers they are compatible with and a list of part numbers that will work per laptop model.
Here are three important steps for you to know how to choose the right laptop charger:
The first thing to consider in an adapter is the voltage. The easiest way to check this is to turn the computer over and see if there is a voltage listed anywhere on the bottom of the notebook. A sticker may be affixed with this information and other similar laptop specification listed. It should be a number with a V such as 20V. This information is also available on the original adapter, if it is available to you. If you do have a current working notebook ac adapter then your best bet is to buy the same exact part number that is on the laptop ac adapter itself. for the users who will travel abroad especially to Europe and Asia. You would need laptop AC adapters that compatible with 220-240 voltage also. So it would be wise, Always look for AC adapters accept 100~240 voltages. 100~240 voltages AC adapters will go with you worldwide. You do not need to carry 2 adapters anymore!!!
The second thing to look for is the current output needed for the laptop ac adapter. Different laptops were designed to consume power varied by equipments such as CD-Rom, LCD size, CPU maker and CPU speed. You require to use the 'matching voltage' . Only use the AC adapters output the matching voltage of your laptops. You can easily locate voltage. Just for example, it may say something like 3.5A, 750mA etc. This number will ensure that the power going to your notebook will be acceptable and keep it operating normal. Not paying attention to either of these numbers could cause the electrical systems in your laptop to malfunction and stop working altogether, Mostly,voltage is printed on your laptops. You also can check your laptop manual.
Once these two issues have been settled, if you do not want to get a universal adapter,the other important step is finding the right 'tips' , Different laptops have different connectors. You need the right tip for your notebook. This is very simply to find. Basically, laptop AC adapters comprise of 2 ends. One end is male power outlet. You use this end to plug into wall power outlet.The other end is called 'TIP' which you will plug this tip into the 'DC IN' in your laptop.The voltage and output current of the laptop ac adapter will not matter if it is not able to be connected. I suggest and think the best way to go is buying a sample of replacement battery charger with the identical part number directly from the manufacturer. Another thing to consider is whether you want an AC adapter or DC adapter. An AC adapter is made to be plugged into any standard electrical outlet such as those in a home or office. The DC adapter is made for automobile use.Your laptop won't work on the wrong tip. You can only use the ' matching Tips' Warning: DO NOT try to force it in.