Question about power adapters, wattages, voltage and amps

S

shashgo

New Member
I have a laptop that has two ratings: 18.5V/3.5 mA and 19.0V/4.74mA. This means the watts is 64.75 for the first rating and 90.06 for the second (P=IV)

I have a charger that is rated 19.5V/3.34mA, which means the power supplied is 65.13W

The wattage of the charger is close to that of the first rating of the laptop. Does that mean the charger will work? Or is it something to do with the voltage and amp rating?

Also, how is it that the laptop can take both ratings of 64.75W and 90.06W?
 
R

raymar

New Member
the rating is max watts/amps not nomial. it probably isn't using anywhere near that most of the time, depending on hd/cdrom/video usage.
 
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