power consumption

mpj111 · Dec 13, 2009

I have a theriotical and practical problem.
My lap top is 18V. I amusing 10V 4000mAH battery.
how long I can use my lap top if battery is fully charged.
how to calculate how much current drain from battery. how much current drain if I used 18 V , 4000mah battery

thank you

Eggster71 · Dec 15, 2009

Get your multimeter on DC current and see what the draw of the laptop is? Surely it's going to vary depending on how much you do

mpj111 · Dec 30, 2009

I am sorry, I have forwarded my question to the wrong forum.
I found the right forum and got the answer already.
sorry for your inconvenience

Guest123 · Dec 30, 2009

Sorry for the un-helpful replies you recieved with regard to your querey.

Regards.

Christech · Dec 31, 2009

Just out of interest what was your reply ?. as i can't see a true time/usage being able to be given.

Guest123 · Dec 31, 2009

I would have thought it depends on what you are doing on the laptop i.e playing music, watching a film surfing the net etc etc.

Depending on the current usage of the hardware/software could be anything from 1 - 3 hours.

The 18V laptop on a 10V battery doesn't quite sound right either.???