Li-ion notebook batteries, constant discharge rate ?

[russell2002]

Hi,

I have a li-ion battery in my notebook.

It discharges much faster from 100% to 85% than from say 50% to 35%.

Is this normal behaviour.

I thought Li-ion cells had a constant discharge rate.

Thanks.

 

[SuperNaruto]

I think those are going bad..... i had that on battery over 1.5 years old.. charges fast too.. like in 5 min it'll show 100% and when you unplug it, it starts to die.. how old is ur battery?

 

[russell2002]

4 weeks !

 

[Aluvus]

The computer is just making an educated guess. Also, the amount of power needed to run the computer is not always constant.

 

[russell2002]

I have been using batterymon to check current power usage and its fairly constant..

Intrestingly at 5% and 6% capacity left it lasts twice as long as at any other percentage of capacity.