Laptop Power Adapter replacements

A big part of the problem is just the sheer variety of notebooks available, which makes it very difficult to make a definitive list, especially as the list will expand as new models come out. Generally, however, there are 3 things you need to match to make a power adaptor work for a given notebook:

First, you need to have a compatible tip that plugs into the input jack of the notebook. This is often standardized across the line of a major manufacturer, but not always. Universal power adaptors will often come with a variety of swappable tips to try to match your notebook.

Second, you want to make sure the supplied voltage matches the voltage of the original adaptor as closely as possible. The match usually does not have to be exact; you can be off by approximately 5-10% usually without significant issues, but you will want to try to get it as close as possible.

Third, you want to try to have the rated wattage of the adaptor match or exceed the wattage of the original adaptor. It is sometimes possible to power a notebook with an adaptor of lesser wattage rating than the original, however this will usually result in the notebook running slower than usual, charging the battery slower than usual, not charging the battery, or various other problems associated with low power. In point of fact, there are instances where the supplied OEM power supply lacked the wattage to properly run all of the components in the first place, and people have had to change to higher wattage power supplies to compensate.

If these three conditions are met, however, usually any adaptor that meets all of them will function appropriately.

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