You had dreams of being able to use your laptop or notebook anywherein any room of your house, on vacation, at work or school, even on planes and or on the train. With all that dragging from place to place, and shoving it into messenger bags and luggage, your charger is unlikely to last as long as the computer itself, even if you're the type to upgrade every two years. Stay on top of your charge with a new laptop power adapter.
Get a Charge
Start with knowing what kind of charge your laptop takes. You need to know the voltage, current, voltage stabilization, and polarity, so you can match these numbers for the replacement. The best way to do this is to look up your laptop model on the manufacturer's site; the charger model your notebook came with will be listed, indicating the appropriate Input and Output levels. You can also find the right information on the power adapter itself. There's usually a sticker or a bit of printed information on the wire that will tell you it's model and voltage information.
You don't have to buy from the manufacturer. You can save money by looking online for the best price for your model power adapter. You can also use the Input/Output numbers to find a compatible generic model. These generic models will usually have spec information or technical data listed that will mention if they work for your laptop model, though if you're uncertain you should either ask or pursue another model.
Plugged In
Besides power compatibility, a laptop power adapter needs to be able to plug into your machine. Not every connector can work with every laptop, so again, it's important to look for mentions of your product in the item's description. For a long-term investment, there are universal power adapters, with multiple connectors and a user control ability, to allow users to change the voltage when using different devices.