Replacement Laptop AC Power Adapter Tips

How to choose your replacement laptop power adapter?

Most laptop AC adapters will have a list of computers they are compatible with and a list of part numbers that will work per laptop model. How to choose a correct power adapter for your laptop? In general, it is all a matter of voltage, output power, and proper connections.

The first thing to consider in a laptop power 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 machine. A sticker may be affixed with this information and other similar laptop specs listed. It should be a number with a V such as 19.5V. 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.

The second thing to look for is the current output needed for the laptop charger. Just for example, it may say something like 4.62A etc. This number will ensure that the power going to your machine 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.

The output voltage and amperage are different from your original AC adapter?

Something you should know is that the high nominal current power adapter can replace the low current power source, but do not get a low nominal current power adapter to replace the original high nominal current laptop power adapter. Usually the replacement AC adapter has +/- 1 voltage allowance. For example, our 19.5V adapter automatically switches its output voltage to 18.5V, 19V, 19.5V, or 20V accordingly when it is plugged in. It will be no problem if the output current (A - Amperage) of your original adapter is smaller than ours. For example, our 90W adapter (19.5V x 4.62A) can replace your genuine 65W (19.5V x 3.34A) or 75W (19.5V x 3.95A) adapter without any problems as long as they have same output voltage and connector tip. For tip size and shape, you can put your mouse on the adapter picture in product page to get a close-up image and read the details. Higher power AC adapter has no impact on your laptop because the laptop drawsbsas as many amps and watts as it needs while the adapter just provides as much power as the laptop draws.

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