My battery life time indicator is all over the place!

[Vikinguy]

I've had my unibody 2.0 since November. It's always said 5 hours or so when i open it up fully charged. This week it's started fluctuating wildy. While typing this post it's gone from 3 hours 23 mins to 4 hours and five mins....it started at 2 hours....now it's up to 4...very odd.


Any ideas on why this has started happening all of the sudden?

 

[5280m]

When is the last time you calibrated your battery?

 

[eXan]

It adjusts the time remaining number according to current load on the machine.

Say, you opened it up and went browsing the web, the number will be 4-5 hours. But then you loaded up a DVD and started ripping it with Handbrake (100% CPU usage) and the number will drop to 1.5-2 hours. But you stopped after a couple of minutes and went back to browsing, so the number will be 4-4.5 hours again.

I hope I make sense

 

[Vikinguy]

It makes perfect sense..it's just behaving differently than it has in the past.