I'm wondering if anyone knows the cheapest way to get a good battery for my macbook? According to CoconutBattery it's running at 36%, and is getting lower and lower everyday. I need to buy a new battery and my MacBook is no longer under warranty..... I've looked around on the apple website but every time i try to find something that isn't brand new, I cannot find it! So, if anyone knows what I should do, or knows how I can fix this terrible problem Pleeeeaaaaassssseeee let me know.. I have to have it plugged in 24/7 (or shut down obviously), or the battery goes from 100% to "Please connect to charger" in like 20 minutes! as you can see this is frustrating.