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 ...
Laptop Computer Batteries: Volts, Amps and MilliAmp Hours (mAh)
All laptop computer batteries have electrical specifications that include its volt and milliAmp hour rating. These terms are abbreviated as we see in the following example: 10.8V, 4000mAhWhat do these terms mean, and why should you care about the specifications of laptop computer batteries?Volts - or V - are an electrical measure of energy potential. You can think of it as the pressure being exerted by all the electrons at a laptop computer batteries negative terminal as they try to move to the ...
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