When choosing a new power supply for laptop, to look at 2 the main criterion. This output voltage of your old charge OUTPUT parameter. It's written on the label of the battery (Example OUTPUT 19V 4.74A). If the old power supply you have not left. The output voltage can be found on the bottom cover notebook on the label. Там нужно смотреть параметры входного напряжения INPUT.
Amperage new power supply should not be less than, than your own. Otherwise, your laptop will be turned off automatically while charging. Due to not grasp the power. This is the most common problem, especially on powerful laptops. However, at the time of purchase, you can take the power supply for laptop slightly more powerful than your own acceptable norm + 1.5A. Example if the amperage of your native 3.42A power adapter that you can safely buy a battery with amperage 4.74A. It is permissible norm. While charging your laptop will work fine and will take the appropriate charge rate. Immediately answer your question: "The laptop will not burn))»
The second main parameter is the diameter of the plug inserted into the notebook. Choose detailed diameter plug can for example notebook model Asus K53sv. Or measure the old plug shtangel compass. The specialized online stores where they sell power supplies for laptops (example maxpower.com.ua) you can easily pick up on the visual plug-quality product photo.
Nuances and plug when selecting a power supply for laptop
It is interesting to note, that plugs vary not only between brands of laptops. But even between models of one brand. ie. two seemingly notebook of the brand Lenovo with the same voltage on the power supply units can be 2 various inputs zaryadok. Because this parameter must be taken seriously, In order to acquire the desired charging that fits. Another interesting fact is that time, that many power supplies are interchangeable and are suitable for different brands. There is a power adapter from Asus notebooks are suitable for Lenovo notebook without problems and vice versa. They are identical in all characteristics, and differ only in name.
We advise to pay attention to the quality of the charger for laptop. power adapters for laptops are divided into classes. The lower the class the worse mounted components. Not quality blocks gradually thrown your battery, and the work they usually did not last long. It can run for a month, and can bang right in the socket. The most common side effect of this glitch touchpad on a laptop while charging. the mouse pointer does not respond spontaneously and walks across the screen! If you encounter such a problem. Give the power supply back seller! Very handy when there is a choice when buying a new charge from the original to the copy quality. Large selection of power supplies for notebook warranty we met here. Always ask for a guarantee from the seller. And bypasses the online stores that do not offer a guarantee on their products (or a guarantee of a week to check). Usually in these stores do not sell quality products.