MacBook Pro battery problem!

[Hobey123]

Hi guys, I purchased the new Macbook Pro, 15" model in december last year and have been using the widget istat pro to monitor the condition of my battery. I noticed when i installed istat pro that my battery life was on 96% about a week ago. Last night I left my MBP in the dormant mode (as in just shutting the lid) and for some reason the power cable had come out. When I woke this morning I discovered that the power cable was out and subsequently plugged the charger back in. When i brought up the istat's widget I noticed something very strange, my battery health had diminished to 68% overnight from 96%. I am wondering how this is possible and if this is anything to be concerned about and if this is a problem whether it will be replaced by Apple warranty.

What do you guys think??

Update: I also used another program called Battery Health Monitor with the same results, the charge cycles is 37, so the battery hasn't been used too frequently.

 

[leodavinci0]

A lithium battery's ability to hold charge is more a function of time than use. Actually it is better for them to be discharged every week or so since it is better for them to have the ions move around. There is no way your computer held a capacity of 96% for a year, something was stuck with the way istat, or whatever was used, was reading the battery. 68% sounds low after a year, but is possible though. Sorry to break it to you. I suggest using your battery at will, mine lasted for about 2.5 years before it only held an hours worth.