Ok hopefully you people can help on this one, because I have no idea what to do. When my dad bought his Macbook Pro (19 months ago) he bought a spare battery with it. Today, with only 3% of its original life left (378 cycles) we tried to put in the *new* battery. The light on the magsafe power adapter doesn't even turn green/orange when its plugged in now and if you pull the power cord out it dies. So my question is, should a battery that was bought a year and a half ago and never opened untell today not work? If so, is it worth bringing the battery into the Apple store to see if they might replace it? Hope I make sence, and thanks in advance!