Battery Tips & Info:
What is Direct Current?
DC (Direct current) is the unidirectional flow or movement of electric charge carriers, usually electron. The intensity of the current can vary with time, but the general direction of movement stays the same at all times. As an adjective, the term DC is used in reference to voltage whose polarity never reverses.In a DC circuit, electrons emerge from the negative, or minus, pole and move towards the positive, or plus, pole. Nevertheless, physicists define DC as traveling from plus to minus.More i ...
Choosing the right AC/DC adapter
Before you buy any AC/DC laptop adapter, please make sure the AC/DC laptop adapter will give you the correct voltage and suitable current output.To find out the voltage & current, turn your laptop over and look for a label, sticker or writing which shows the voltage and current, it should look something like the examples below. The voltage figure will have a "V" after the number i.e 19V and the current will have a "A" or "mA". i.e 3.15A, 950mA. You can also find ...
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