my macbook pro battery is going down 1% every 3 mins
i just bought my macbook pro not long ago. around 2months?
and my battery is going down really quick. 1% every 3 mins and i only have firefox on and my backlight is turn off. my brightness is turn on to the middle.
i was looking at my friends macbook. doesnt seem to be going down so quickly.
what is wrong with it?
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)