I have a problem with my laptop battery. Recently I noticed that my laptop can last a loot shorter on battery, around 1h 15min instead of 2h like usually. At first I thought it was something wrong with my power settings but after checking that up, I noticed in Everest that my [B]Fully charged capacity[/B] of my battery is around 40% lower then designed capacity!
Is there any reason to that or can I do something to make it last 2h again? I want to add that such thing (with lowering my battery capacity) happen over couple of days, so it was quite rapid.