laptop wattage use?

[jpiermarini]

is there a program out that will tell you the wattage your laptop is using?

[John Prophet]

one thing you can do is look at the power adapter...if it says it is a 200 watt (or whatever)adapter then you know the laptop is using less than that

[jpiermarini]

no where on this battery pack does it say watts i have input 100v-240v~ 2.2A-1.0A 50-60Hz
Output 19,5V 7.7A

on the battery it self it says 14.8V

[jpiermarini]

my whole goal in this is to purchase a car converter where i plug something into the cigarette lighter and then i can plug the laptop into that. so i'm trying to figure out how many watts this device is going to need to generate

[meese]

Watts is voltage x amps; as an example use a 100 watt light bulb. You know the watts is 100, and the ac voltage is 110VAC, so devide watts by voltage (100/110) is about 0.9 amps. (So on a 15 amp breaker you could have 15 100 watt light bulbs all on at the same time )

We use this power measuring device: Model P4400 Kill A Watt. It plugs into a standard ac repticle and you plug the charger/powersupply into it. It will tell you the Watts Hertz Amps Volts and KWH

http://www.p3international.com/produ.../P4400-CE.html

[jpiermarini]

so i'm lookin at about 220 watts

[meese]

Yes, 220 - 240 watts I would say.